diff --git a/Cargo.toml b/Cargo.toml
index eda82c4..7708914 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "littlefs2-sys"
 description = "Low-level bindings to littlefs"
-version = "0.1.4"
+version = "0.1.5"
 authors = ["Nicolas Stalder <n@stalder.io>"]
 edition = "2018"
 license = "BSD-3-Clause"
diff --git a/README.md b/README.md
index be937a4..e15e44d 100644
--- a/README.md
+++ b/README.md
@@ -31,11 +31,11 @@ Low-level bindings to the [littlefs][littlefs] microcontroller filesystem.
 
 You probably want the high-level, idiomatic Rust bindings: [littlefs2][littlefs2]
 
-Upstream release: [v2.2.0][upstream-release]
+Upstream release: [v2.2.1][upstream-release]
 
 [littlefs]: https://github.com/ARMmbed/littlefs
 [littlefs2]: https://github.com/nickray/littlefs2
-[upstream-release]: https://github.com/ARMmbed/littlefs/releases/tag/v2.2.0
+[upstream-release]: https://github.com/ARMmbed/littlefs/releases/tag/v2.2.1
 
 #### License
 
diff --git a/littlefs b/littlefs
index a049f13..4c9146e 160000
--- a/littlefs
+++ b/littlefs
@@ -1 +1 @@
-Subproject commit a049f1318eecbe502549f9d74a41951985fb956f
+Subproject commit 4c9146ea539f72749d6cc3ea076372a81b12cb11