diff --git a/configure.REMOVED.git-id b/configure.REMOVED.git-id
index aba0909e16..c148de80e0 100644
--- a/configure.REMOVED.git-id
+++ b/configure.REMOVED.git-id
@@ -1 +1 @@
-b796426724e7961d0e254ca3f7d9ac4049499d5d
\ No newline at end of file
+dedcdea54ed22b2f5d3bb7e1de37b77702527d1a
\ No newline at end of file
diff --git a/configure.ac.REMOVED.git-id b/configure.ac.REMOVED.git-id
index a598811a35..39eb7a42c4 100644
--- a/configure.ac.REMOVED.git-id
+++ b/configure.ac.REMOVED.git-id
@@ -1 +1 @@
-edc8bec4f4b607c3a97b3df060a00581a5ec2e30
\ No newline at end of file
+aef91595c533d430081888c8af71445b4fc3f164
\ No newline at end of file
diff --git a/external/api-snapshot/profiles/monodroid/mscorlib.cs.REMOVED.git-id b/external/api-snapshot/profiles/monodroid/mscorlib.cs.REMOVED.git-id
index 5500937f8a..a87d933a6f 100644
--- a/external/api-snapshot/profiles/monodroid/mscorlib.cs.REMOVED.git-id
+++ b/external/api-snapshot/profiles/monodroid/mscorlib.cs.REMOVED.git-id
@@ -1 +1 @@
-5720eb204ffdc35ca77f9c0f4c69efa1779a6fe7
\ No newline at end of file
+a2da0f3967d88642e55a982da38b2df455a79b70
\ No newline at end of file
diff --git a/external/api-snapshot/profiles/monotouch/mscorlib.cs.REMOVED.git-id b/external/api-snapshot/profiles/monotouch/mscorlib.cs.REMOVED.git-id
index 53a5cfdd1d..c3207c569d 100644
--- a/external/api-snapshot/profiles/monotouch/mscorlib.cs.REMOVED.git-id
+++ b/external/api-snapshot/profiles/monotouch/mscorlib.cs.REMOVED.git-id
@@ -1 +1 @@
-3bfb5c5d5207383227a9277b36b995ff585297ba
\ No newline at end of file
+34ad6abcc4b7e3861a2242154197ae0f8dd7b2cc
\ No newline at end of file
diff --git a/external/api-snapshot/profiles/net_4_x/mscorlib.cs.REMOVED.git-id b/external/api-snapshot/profiles/net_4_x/mscorlib.cs.REMOVED.git-id
index 0fad55ac87..db0a1770c5 100644
--- a/external/api-snapshot/profiles/net_4_x/mscorlib.cs.REMOVED.git-id
+++ b/external/api-snapshot/profiles/net_4_x/mscorlib.cs.REMOVED.git-id
@@ -1 +1 @@
-ed19cc64be777080a3bba2cb682288cc5b3e9d20
\ No newline at end of file
+9f78547be1fb0d89abe4b6081fd5e151a17e94c8
\ No newline at end of file
diff --git a/mcs/build/common/Consts.cs b/mcs/build/common/Consts.cs
index c98aa9deaf..f8fd6f0915 100644
--- a/mcs/build/common/Consts.cs
+++ b/mcs/build/common/Consts.cs
@@ -34,7 +34,7 @@ static class Consts
 	// Use these assembly version constants to make code more maintainable.
 	//
 
-	public const string MonoVersion = "5.20.0.184";
+	public const string MonoVersion = "5.20.0.185";
 	public const string MonoCompany = "Mono development team";
 	public const string MonoProduct = "Mono Common Language Infrastructure";
 	public const string MonoCopyright = "(c) Various Mono authors";
diff --git a/mcs/class/corlib/Test/System.Threading/CancellationTokenSourceTest.cs b/mcs/class/corlib/Test/System.Threading/CancellationTokenSourceTest.cs
index 59d9b8cbba..19daae965d 100644
--- a/mcs/class/corlib/Test/System.Threading/CancellationTokenSourceTest.cs
+++ b/mcs/class/corlib/Test/System.Threading/CancellationTokenSourceTest.cs
@@ -491,6 +491,35 @@ namespace MonoTests.System.Threading
 				c1.Dispose ();
 			}
 		}
+
+		[Test] // https://github.com/mono/mono/issues/12421
+		public void EnsurePostIsNotCalled ()
+		{
+			SynchronizationContext mainContext = SynchronizationContext.Current;
+			var asc = new AssertSyncContext ();
+			SynchronizationContext.SetSynchronizationContext (asc);
+			var ct = new CancellationTokenSource ();
+			var tcs = new TaskCompletionSource<bool> ();
+			ct.Token.Register (() => tcs.TrySetCanceled ());
+
+			bool taskIsCancelled = false;
+			Action awaitAction = async () => {
+					try { await tcs.Task; }
+					catch (OperationCanceledException) { 
+						taskIsCancelled = true;
+					}
+				};
+			awaitAction ();
+			ct.Cancel (); // should not trigger SynchronizationContext.Post
+			Assert.IsTrue (taskIsCancelled);
+			SynchronizationContext.SetSynchronizationContext (mainContext);
+		}
+
+		class AssertSyncContext : SynchronizationContext
+		{
+			public override void Post (SendOrPostCallback d, object state) =>
+				throw new InvalidOperationException ("SynchronizationContext.Post was not expected.");
+		}
 	}
 }
 
diff --git a/mcs/class/corlib/corlib.dll.sources.REMOVED.git-id b/mcs/class/corlib/corlib.dll.sources.REMOVED.git-id
index be0c1dd604..8374b896dd 100644
--- a/mcs/class/corlib/corlib.dll.sources.REMOVED.git-id
+++ b/mcs/class/corlib/corlib.dll.sources.REMOVED.git-id
@@ -1 +1 @@
-434209ab0071fbc27efd9219f99f4dd3f9f3c5a5
\ No newline at end of file
+ac73c8792dbdb43746aeeab1d2fc010ecce1f93e
\ No newline at end of file
diff --git a/mcs/class/lib/monolite-linux/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/Mono.Security.dll.REMOVED.git-id b/mcs/class/lib/monolite-linux/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/Mono.Security.dll.REMOVED.git-id
index 0e9c6c6c78..96d78272e3 100644
--- a/mcs/class/lib/monolite-linux/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/Mono.Security.dll.REMOVED.git-id
+++ b/mcs/class/lib/monolite-linux/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/Mono.Security.dll.REMOVED.git-id
@@ -1 +1 @@
-865e5662e29da2a52bb18b2500ddc7bd5f45d50f
\ No newline at end of file
+d83abc65e85980dfa39ccd8b45dd4523d2330d92
\ No newline at end of file
diff --git a/mcs/class/lib/monolite-linux/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Configuration.dll.REMOVED.git-id b/mcs/class/lib/monolite-linux/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Configuration.dll.REMOVED.git-id
index 450d34efa4..0df2ee9753 100644
--- a/mcs/class/lib/monolite-linux/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Configuration.dll.REMOVED.git-id
+++ b/mcs/class/lib/monolite-linux/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Configuration.dll.REMOVED.git-id
@@ -1 +1 @@
-6a865dece6532c6139ed10e8bfc0b21b1525bed6
\ No newline at end of file
+e419c4c654ebfad7e118b5b0a5036e6c85d3117c
\ No newline at end of file
diff --git a/mcs/class/lib/monolite-linux/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Core.dll.REMOVED.git-id b/mcs/class/lib/monolite-linux/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Core.dll.REMOVED.git-id
index e2344667e4..0d891b111d 100644
--- a/mcs/class/lib/monolite-linux/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Core.dll.REMOVED.git-id
+++ b/mcs/class/lib/monolite-linux/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Core.dll.REMOVED.git-id
@@ -1 +1 @@
-5a096ae0d88faf3f76e9e3a8950467a4a409c735
\ No newline at end of file
+02b5acbd3ff197caf5a6c6eb99377e21adea61c4
\ No newline at end of file
diff --git a/mcs/class/lib/monolite-linux/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.IO.Compression.dll b/mcs/class/lib/monolite-linux/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.IO.Compression.dll
index 914916af60..1983bbea7b 100644
Binary files a/mcs/class/lib/monolite-linux/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.IO.Compression.dll and b/mcs/class/lib/monolite-linux/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.IO.Compression.dll differ
diff --git a/mcs/class/lib/monolite-linux/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Numerics.dll.REMOVED.git-id b/mcs/class/lib/monolite-linux/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Numerics.dll.REMOVED.git-id
index 3618a7036a..5832c868a1 100644
--- a/mcs/class/lib/monolite-linux/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Numerics.dll.REMOVED.git-id
+++ b/mcs/class/lib/monolite-linux/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Numerics.dll.REMOVED.git-id
@@ -1 +1 @@
-36de3a387d536149b60018901ae19b8a27886712
\ No newline at end of file
+1cb2c7d258fdc2216c31ee23f656fbaa79b1913d
\ No newline at end of file
diff --git a/mcs/class/lib/monolite-linux/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Xml.dll.REMOVED.git-id b/mcs/class/lib/monolite-linux/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Xml.dll.REMOVED.git-id
index 1de1262694..9e7bd6a883 100644
--- a/mcs/class/lib/monolite-linux/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Xml.dll.REMOVED.git-id
+++ b/mcs/class/lib/monolite-linux/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Xml.dll.REMOVED.git-id
@@ -1 +1 @@
-b11e33b00feef3ef153728eefb46a0b6e937b126
\ No newline at end of file
+f3e061ca2f4014e9d695b3e563bab23ecbccfa13
\ No newline at end of file
diff --git a/mcs/class/lib/monolite-linux/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.dll.REMOVED.git-id b/mcs/class/lib/monolite-linux/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.dll.REMOVED.git-id
index b1db618ee3..934943e255 100644
--- a/mcs/class/lib/monolite-linux/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.dll.REMOVED.git-id
+++ b/mcs/class/lib/monolite-linux/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.dll.REMOVED.git-id
@@ -1 +1 @@
-8df6f0bf6e9dca89d20ab916dc3c7b449bfbeb4b
\ No newline at end of file
+6ea4aa06adb4bbd8260a701a273a7365c0c9b2b5
\ No newline at end of file
diff --git a/mcs/class/lib/monolite-linux/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/mcs.exe.REMOVED.git-id b/mcs/class/lib/monolite-linux/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/mcs.exe.REMOVED.git-id
index 0e9acf2a5d..6dd77a3b76 100644
--- a/mcs/class/lib/monolite-linux/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/mcs.exe.REMOVED.git-id
+++ b/mcs/class/lib/monolite-linux/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/mcs.exe.REMOVED.git-id
@@ -1 +1 @@
-1caba0de2880f7ce16a6137889542db4278b682d
\ No newline at end of file
+3f48bcd204d1b36acaec348197e0b79b783603b0
\ No newline at end of file
diff --git a/mcs/class/lib/monolite-linux/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/mscorlib.dll.REMOVED.git-id b/mcs/class/lib/monolite-linux/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/mscorlib.dll.REMOVED.git-id
index dba5ac845c..27d93a907f 100644
--- a/mcs/class/lib/monolite-linux/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/mscorlib.dll.REMOVED.git-id
+++ b/mcs/class/lib/monolite-linux/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/mscorlib.dll.REMOVED.git-id
@@ -1 +1 @@
-58981cf12840e74fa15ccaae8ebaacf740707edf
\ No newline at end of file
+1c28a232761b6a636d065c9084b7a6dcf3bba522
\ No newline at end of file
diff --git a/mcs/class/lib/monolite-macos/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/Mono.Security.dll.REMOVED.git-id b/mcs/class/lib/monolite-macos/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/Mono.Security.dll.REMOVED.git-id
index 0e9c6c6c78..96d78272e3 100644
--- a/mcs/class/lib/monolite-macos/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/Mono.Security.dll.REMOVED.git-id
+++ b/mcs/class/lib/monolite-macos/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/Mono.Security.dll.REMOVED.git-id
@@ -1 +1 @@
-865e5662e29da2a52bb18b2500ddc7bd5f45d50f
\ No newline at end of file
+d83abc65e85980dfa39ccd8b45dd4523d2330d92
\ No newline at end of file
diff --git a/mcs/class/lib/monolite-macos/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Configuration.dll.REMOVED.git-id b/mcs/class/lib/monolite-macos/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Configuration.dll.REMOVED.git-id
index 450d34efa4..0df2ee9753 100644
--- a/mcs/class/lib/monolite-macos/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Configuration.dll.REMOVED.git-id
+++ b/mcs/class/lib/monolite-macos/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Configuration.dll.REMOVED.git-id
@@ -1 +1 @@
-6a865dece6532c6139ed10e8bfc0b21b1525bed6
\ No newline at end of file
+e419c4c654ebfad7e118b5b0a5036e6c85d3117c
\ No newline at end of file
diff --git a/mcs/class/lib/monolite-macos/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Core.dll.REMOVED.git-id b/mcs/class/lib/monolite-macos/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Core.dll.REMOVED.git-id
index e2344667e4..0d891b111d 100644
--- a/mcs/class/lib/monolite-macos/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Core.dll.REMOVED.git-id
+++ b/mcs/class/lib/monolite-macos/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Core.dll.REMOVED.git-id
@@ -1 +1 @@
-5a096ae0d88faf3f76e9e3a8950467a4a409c735
\ No newline at end of file
+02b5acbd3ff197caf5a6c6eb99377e21adea61c4
\ No newline at end of file
diff --git a/mcs/class/lib/monolite-macos/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.IO.Compression.dll b/mcs/class/lib/monolite-macos/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.IO.Compression.dll
index 914916af60..1983bbea7b 100644
Binary files a/mcs/class/lib/monolite-macos/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.IO.Compression.dll and b/mcs/class/lib/monolite-macos/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.IO.Compression.dll differ
diff --git a/mcs/class/lib/monolite-macos/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Numerics.dll.REMOVED.git-id b/mcs/class/lib/monolite-macos/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Numerics.dll.REMOVED.git-id
index 3618a7036a..5832c868a1 100644
--- a/mcs/class/lib/monolite-macos/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Numerics.dll.REMOVED.git-id
+++ b/mcs/class/lib/monolite-macos/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Numerics.dll.REMOVED.git-id
@@ -1 +1 @@
-36de3a387d536149b60018901ae19b8a27886712
\ No newline at end of file
+1cb2c7d258fdc2216c31ee23f656fbaa79b1913d
\ No newline at end of file
diff --git a/mcs/class/lib/monolite-macos/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Xml.dll.REMOVED.git-id b/mcs/class/lib/monolite-macos/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Xml.dll.REMOVED.git-id
index 1de1262694..9e7bd6a883 100644
--- a/mcs/class/lib/monolite-macos/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Xml.dll.REMOVED.git-id
+++ b/mcs/class/lib/monolite-macos/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Xml.dll.REMOVED.git-id
@@ -1 +1 @@
-b11e33b00feef3ef153728eefb46a0b6e937b126
\ No newline at end of file
+f3e061ca2f4014e9d695b3e563bab23ecbccfa13
\ No newline at end of file
diff --git a/mcs/class/lib/monolite-macos/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.dll.REMOVED.git-id b/mcs/class/lib/monolite-macos/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.dll.REMOVED.git-id
index b1db618ee3..934943e255 100644
--- a/mcs/class/lib/monolite-macos/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.dll.REMOVED.git-id
+++ b/mcs/class/lib/monolite-macos/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.dll.REMOVED.git-id
@@ -1 +1 @@
-8df6f0bf6e9dca89d20ab916dc3c7b449bfbeb4b
\ No newline at end of file
+6ea4aa06adb4bbd8260a701a273a7365c0c9b2b5
\ No newline at end of file
diff --git a/mcs/class/lib/monolite-macos/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/mcs.exe.REMOVED.git-id b/mcs/class/lib/monolite-macos/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/mcs.exe.REMOVED.git-id
index 0e9acf2a5d..6dd77a3b76 100644
--- a/mcs/class/lib/monolite-macos/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/mcs.exe.REMOVED.git-id
+++ b/mcs/class/lib/monolite-macos/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/mcs.exe.REMOVED.git-id
@@ -1 +1 @@
-1caba0de2880f7ce16a6137889542db4278b682d
\ No newline at end of file
+3f48bcd204d1b36acaec348197e0b79b783603b0
\ No newline at end of file
diff --git a/mcs/class/lib/monolite-macos/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/mscorlib.dll.REMOVED.git-id b/mcs/class/lib/monolite-macos/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/mscorlib.dll.REMOVED.git-id
index dba5ac845c..27d93a907f 100644
--- a/mcs/class/lib/monolite-macos/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/mscorlib.dll.REMOVED.git-id
+++ b/mcs/class/lib/monolite-macos/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/mscorlib.dll.REMOVED.git-id
@@ -1 +1 @@
-58981cf12840e74fa15ccaae8ebaacf740707edf
\ No newline at end of file
+1c28a232761b6a636d065c9084b7a6dcf3bba522
\ No newline at end of file
diff --git a/mcs/class/lib/monolite-unix/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/Mono.Security.dll.REMOVED.git-id b/mcs/class/lib/monolite-unix/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/Mono.Security.dll.REMOVED.git-id
index 0e9c6c6c78..96d78272e3 100644
--- a/mcs/class/lib/monolite-unix/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/Mono.Security.dll.REMOVED.git-id
+++ b/mcs/class/lib/monolite-unix/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/Mono.Security.dll.REMOVED.git-id
@@ -1 +1 @@
-865e5662e29da2a52bb18b2500ddc7bd5f45d50f
\ No newline at end of file
+d83abc65e85980dfa39ccd8b45dd4523d2330d92
\ No newline at end of file
diff --git a/mcs/class/lib/monolite-unix/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Configuration.dll.REMOVED.git-id b/mcs/class/lib/monolite-unix/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Configuration.dll.REMOVED.git-id
index 450d34efa4..0df2ee9753 100644
--- a/mcs/class/lib/monolite-unix/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Configuration.dll.REMOVED.git-id
+++ b/mcs/class/lib/monolite-unix/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Configuration.dll.REMOVED.git-id
@@ -1 +1 @@
-6a865dece6532c6139ed10e8bfc0b21b1525bed6
\ No newline at end of file
+e419c4c654ebfad7e118b5b0a5036e6c85d3117c
\ No newline at end of file
diff --git a/mcs/class/lib/monolite-unix/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Core.dll.REMOVED.git-id b/mcs/class/lib/monolite-unix/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Core.dll.REMOVED.git-id
index e2344667e4..0d891b111d 100644
--- a/mcs/class/lib/monolite-unix/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Core.dll.REMOVED.git-id
+++ b/mcs/class/lib/monolite-unix/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Core.dll.REMOVED.git-id
@@ -1 +1 @@
-5a096ae0d88faf3f76e9e3a8950467a4a409c735
\ No newline at end of file
+02b5acbd3ff197caf5a6c6eb99377e21adea61c4
\ No newline at end of file
diff --git a/mcs/class/lib/monolite-unix/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.IO.Compression.dll b/mcs/class/lib/monolite-unix/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.IO.Compression.dll
index 914916af60..1983bbea7b 100644
Binary files a/mcs/class/lib/monolite-unix/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.IO.Compression.dll and b/mcs/class/lib/monolite-unix/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.IO.Compression.dll differ
diff --git a/mcs/class/lib/monolite-unix/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Numerics.dll.REMOVED.git-id b/mcs/class/lib/monolite-unix/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Numerics.dll.REMOVED.git-id
index 3618a7036a..5832c868a1 100644
--- a/mcs/class/lib/monolite-unix/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Numerics.dll.REMOVED.git-id
+++ b/mcs/class/lib/monolite-unix/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Numerics.dll.REMOVED.git-id
@@ -1 +1 @@
-36de3a387d536149b60018901ae19b8a27886712
\ No newline at end of file
+1cb2c7d258fdc2216c31ee23f656fbaa79b1913d
\ No newline at end of file
diff --git a/mcs/class/lib/monolite-unix/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Xml.dll.REMOVED.git-id b/mcs/class/lib/monolite-unix/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Xml.dll.REMOVED.git-id
index 1de1262694..9e7bd6a883 100644
--- a/mcs/class/lib/monolite-unix/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Xml.dll.REMOVED.git-id
+++ b/mcs/class/lib/monolite-unix/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Xml.dll.REMOVED.git-id
@@ -1 +1 @@
-b11e33b00feef3ef153728eefb46a0b6e937b126
\ No newline at end of file
+f3e061ca2f4014e9d695b3e563bab23ecbccfa13
\ No newline at end of file
diff --git a/mcs/class/lib/monolite-unix/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.dll.REMOVED.git-id b/mcs/class/lib/monolite-unix/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.dll.REMOVED.git-id
index b1db618ee3..934943e255 100644
--- a/mcs/class/lib/monolite-unix/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.dll.REMOVED.git-id
+++ b/mcs/class/lib/monolite-unix/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.dll.REMOVED.git-id
@@ -1 +1 @@
-8df6f0bf6e9dca89d20ab916dc3c7b449bfbeb4b
\ No newline at end of file
+6ea4aa06adb4bbd8260a701a273a7365c0c9b2b5
\ No newline at end of file
diff --git a/mcs/class/lib/monolite-unix/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/mcs.exe.REMOVED.git-id b/mcs/class/lib/monolite-unix/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/mcs.exe.REMOVED.git-id
index 0e9acf2a5d..6dd77a3b76 100644
--- a/mcs/class/lib/monolite-unix/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/mcs.exe.REMOVED.git-id
+++ b/mcs/class/lib/monolite-unix/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/mcs.exe.REMOVED.git-id
@@ -1 +1 @@
-1caba0de2880f7ce16a6137889542db4278b682d
\ No newline at end of file
+3f48bcd204d1b36acaec348197e0b79b783603b0
\ No newline at end of file
diff --git a/mcs/class/lib/monolite-unix/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/mscorlib.dll.REMOVED.git-id b/mcs/class/lib/monolite-unix/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/mscorlib.dll.REMOVED.git-id
index dba5ac845c..27d93a907f 100644
--- a/mcs/class/lib/monolite-unix/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/mscorlib.dll.REMOVED.git-id
+++ b/mcs/class/lib/monolite-unix/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/mscorlib.dll.REMOVED.git-id
@@ -1 +1 @@
-58981cf12840e74fa15ccaae8ebaacf740707edf
\ No newline at end of file
+1c28a232761b6a636d065c9084b7a6dcf3bba522
\ No newline at end of file
diff --git a/mcs/class/lib/monolite-win32/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/Mono.Security.dll.REMOVED.git-id b/mcs/class/lib/monolite-win32/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/Mono.Security.dll.REMOVED.git-id
index 0e9c6c6c78..96d78272e3 100644
--- a/mcs/class/lib/monolite-win32/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/Mono.Security.dll.REMOVED.git-id
+++ b/mcs/class/lib/monolite-win32/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/Mono.Security.dll.REMOVED.git-id
@@ -1 +1 @@
-865e5662e29da2a52bb18b2500ddc7bd5f45d50f
\ No newline at end of file
+d83abc65e85980dfa39ccd8b45dd4523d2330d92
\ No newline at end of file
diff --git a/mcs/class/lib/monolite-win32/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Configuration.dll.REMOVED.git-id b/mcs/class/lib/monolite-win32/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Configuration.dll.REMOVED.git-id
index 450d34efa4..0df2ee9753 100644
--- a/mcs/class/lib/monolite-win32/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Configuration.dll.REMOVED.git-id
+++ b/mcs/class/lib/monolite-win32/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Configuration.dll.REMOVED.git-id
@@ -1 +1 @@
-6a865dece6532c6139ed10e8bfc0b21b1525bed6
\ No newline at end of file
+e419c4c654ebfad7e118b5b0a5036e6c85d3117c
\ No newline at end of file
diff --git a/mcs/class/lib/monolite-win32/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Core.dll.REMOVED.git-id b/mcs/class/lib/monolite-win32/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Core.dll.REMOVED.git-id
index e2344667e4..0d891b111d 100644
--- a/mcs/class/lib/monolite-win32/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Core.dll.REMOVED.git-id
+++ b/mcs/class/lib/monolite-win32/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Core.dll.REMOVED.git-id
@@ -1 +1 @@
-5a096ae0d88faf3f76e9e3a8950467a4a409c735
\ No newline at end of file
+02b5acbd3ff197caf5a6c6eb99377e21adea61c4
\ No newline at end of file
diff --git a/mcs/class/lib/monolite-win32/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.IO.Compression.dll b/mcs/class/lib/monolite-win32/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.IO.Compression.dll
index 914916af60..1983bbea7b 100644
Binary files a/mcs/class/lib/monolite-win32/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.IO.Compression.dll and b/mcs/class/lib/monolite-win32/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.IO.Compression.dll differ
diff --git a/mcs/class/lib/monolite-win32/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Numerics.dll.REMOVED.git-id b/mcs/class/lib/monolite-win32/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Numerics.dll.REMOVED.git-id
index 3618a7036a..5832c868a1 100644
--- a/mcs/class/lib/monolite-win32/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Numerics.dll.REMOVED.git-id
+++ b/mcs/class/lib/monolite-win32/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Numerics.dll.REMOVED.git-id
@@ -1 +1 @@
-36de3a387d536149b60018901ae19b8a27886712
\ No newline at end of file
+1cb2c7d258fdc2216c31ee23f656fbaa79b1913d
\ No newline at end of file
diff --git a/mcs/class/lib/monolite-win32/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Xml.dll.REMOVED.git-id b/mcs/class/lib/monolite-win32/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Xml.dll.REMOVED.git-id
index 1de1262694..9e7bd6a883 100644
--- a/mcs/class/lib/monolite-win32/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Xml.dll.REMOVED.git-id
+++ b/mcs/class/lib/monolite-win32/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.Xml.dll.REMOVED.git-id
@@ -1 +1 @@
-b11e33b00feef3ef153728eefb46a0b6e937b126
\ No newline at end of file
+f3e061ca2f4014e9d695b3e563bab23ecbccfa13
\ No newline at end of file
diff --git a/mcs/class/lib/monolite-win32/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.dll.REMOVED.git-id b/mcs/class/lib/monolite-win32/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.dll.REMOVED.git-id
index b1db618ee3..934943e255 100644
--- a/mcs/class/lib/monolite-win32/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.dll.REMOVED.git-id
+++ b/mcs/class/lib/monolite-win32/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/System.dll.REMOVED.git-id
@@ -1 +1 @@
-8df6f0bf6e9dca89d20ab916dc3c7b449bfbeb4b
\ No newline at end of file
+6ea4aa06adb4bbd8260a701a273a7365c0c9b2b5
\ No newline at end of file
diff --git a/mcs/class/lib/monolite-win32/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/mcs.exe.REMOVED.git-id b/mcs/class/lib/monolite-win32/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/mcs.exe.REMOVED.git-id
index 0e9acf2a5d..6dd77a3b76 100644
--- a/mcs/class/lib/monolite-win32/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/mcs.exe.REMOVED.git-id
+++ b/mcs/class/lib/monolite-win32/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/mcs.exe.REMOVED.git-id
@@ -1 +1 @@
-1caba0de2880f7ce16a6137889542db4278b682d
\ No newline at end of file
+3f48bcd204d1b36acaec348197e0b79b783603b0
\ No newline at end of file
diff --git a/mcs/class/lib/monolite-win32/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/mscorlib.dll.REMOVED.git-id b/mcs/class/lib/monolite-win32/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/mscorlib.dll.REMOVED.git-id
index dba5ac845c..27d93a907f 100644
--- a/mcs/class/lib/monolite-win32/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/mscorlib.dll.REMOVED.git-id
+++ b/mcs/class/lib/monolite-win32/B886E13F-6276-4BE5-85F8-C6BF5EDBD200/mscorlib.dll.REMOVED.git-id
@@ -1 +1 @@
-58981cf12840e74fa15ccaae8ebaacf740707edf
\ No newline at end of file
+1c28a232761b6a636d065c9084b7a6dcf3bba522
\ No newline at end of file
diff --git a/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs b/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs
index 6f5f609c55..397606fd74 100644
--- a/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs
+++ b/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs
@@ -1243,7 +1243,11 @@ namespace System.Threading
             {
                 // capture the sync context
                 if (0 == (options & CaptureOptions.IgnoreSyncCtx))
+#if MONO
+                    syncCtxNew = ecCurrent.SynchronizationContext;
+#else
                     syncCtxNew = (ecCurrent.SynchronizationContext == null) ? null : ecCurrent.SynchronizationContext.CreateCopy();
+#endif
 
 #if FEATURE_REMOTING
                 // copy over the Logical Call Context
diff --git a/mono/mini/version.h b/mono/mini/version.h
index 52d16ac159..b1c4de232e 100644
--- a/mono/mini/version.h
+++ b/mono/mini/version.h
@@ -1 +1 @@
-#define FULL_VERSION "explicit/9434d41"
+#define FULL_VERSION "explicit/829480a"
diff --git a/po/mcs/de.gmo b/po/mcs/de.gmo
index a19addefa5..53da2b2dfe 100644
Binary files a/po/mcs/de.gmo and b/po/mcs/de.gmo differ
diff --git a/po/mcs/de.po.REMOVED.git-id b/po/mcs/de.po.REMOVED.git-id
index 58a7167923..ad9de55a66 100644
--- a/po/mcs/de.po.REMOVED.git-id
+++ b/po/mcs/de.po.REMOVED.git-id
@@ -1 +1 @@
-6a72a37c86982589a16ae05a57b620fe354537b9
\ No newline at end of file
+da3975064f051dcfbd30b75c23dcee6a7842f818
\ No newline at end of file
diff --git a/po/mcs/es.gmo b/po/mcs/es.gmo
index ab40bcf508..8d9157100b 100644
Binary files a/po/mcs/es.gmo and b/po/mcs/es.gmo differ
diff --git a/po/mcs/es.po.REMOVED.git-id b/po/mcs/es.po.REMOVED.git-id
index 90822d042e..812b155be0 100644
--- a/po/mcs/es.po.REMOVED.git-id
+++ b/po/mcs/es.po.REMOVED.git-id
@@ -1 +1 @@
-da7b7b4d0daf13c71647dcfaeade314af8fbb3f3
\ No newline at end of file
+1344c396cd14b34d05b05d0cd4ccd036986637b7
\ No newline at end of file
diff --git a/po/mcs/ja.gmo b/po/mcs/ja.gmo
index 43e27a4385..641bdd1daf 100644
Binary files a/po/mcs/ja.gmo and b/po/mcs/ja.gmo differ
diff --git a/po/mcs/ja.po.REMOVED.git-id b/po/mcs/ja.po.REMOVED.git-id
index 41daa5d825..f292c4e0bd 100644
--- a/po/mcs/ja.po.REMOVED.git-id
+++ b/po/mcs/ja.po.REMOVED.git-id
@@ -1 +1 @@
-1a839ae8748554cfcf5a519f6320d7653a58090f
\ No newline at end of file
+9b592f749549bd4add5e7c677d81321420b876b8
\ No newline at end of file
diff --git a/po/mcs/mcs.pot b/po/mcs/mcs.pot
index 6492a6daea..94489dc1e5 100644
--- a/po/mcs/mcs.pot
+++ b/po/mcs/mcs.pot
@@ -6,9 +6,9 @@
 #, fuzzy
 msgid ""
 msgstr ""
-"Project-Id-Version: mono 5.20.0.184\n"
+"Project-Id-Version: mono 5.20.0.185\n"
 "Report-Msgid-Bugs-To: http://www.mono-project.com/Bugs\n"
-"POT-Creation-Date: 2019-02-05 08:06+0000\n"
+"POT-Creation-Date: 2019-02-06 08:08+0000\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
diff --git a/po/mcs/pt_BR.gmo b/po/mcs/pt_BR.gmo
index 6a79b5db71..dab7ecd052 100644
Binary files a/po/mcs/pt_BR.gmo and b/po/mcs/pt_BR.gmo differ
diff --git a/po/mcs/pt_BR.po.REMOVED.git-id b/po/mcs/pt_BR.po.REMOVED.git-id
index 7403cef713..2c40021414 100644
--- a/po/mcs/pt_BR.po.REMOVED.git-id
+++ b/po/mcs/pt_BR.po.REMOVED.git-id
@@ -1 +1 @@
-90f41adbbe070f8d07c56c8d970c6b775694b150
\ No newline at end of file
+a1d2c54e4a8e85d9240137a157e4a703a24431db
\ No newline at end of file