diff --git a/Cargo.toml b/Cargo.toml
index cac160f6..9e3165c7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,7 +2,7 @@
 name = "sdl2_mixer"
 description = "SDL2_mixer bindings for Rust"
 repository = "https://github.com/andelf/rust-sdl2_mixer"
-version = "0.16.0"
+version = "0.17.0"
 license = "MIT"
 authors = ["ShuYu Wang <andelf@gmail.com>"]
 keywords = ["SDL", "windowing", "graphics", "music", "sound"]
@@ -12,8 +12,8 @@ name = "sdl2_mixer"
 path = "src/sdl2_mixer/lib.rs"
 
 [dependencies]
-bitflags = "0.3.2"
-sdl2 = "0.16"
+bitflags = "0.5.0"
+sdl2 = "0.18"
 sdl2-sys = "0.8.1"
 libc = "0.2"
 
diff --git a/src/sdl2_mixer/lib.rs b/src/sdl2_mixer/lib.rs
index cceecc6d..d68af64c 100644
--- a/src/sdl2_mixer/lib.rs
+++ b/src/sdl2_mixer/lib.rs
@@ -106,13 +106,13 @@ pub fn get_linked_version() -> Version {
     unsafe { Version::from_ll(*ffi::Mix_Linked_Version()) }
 }
 
-bitflags!(flags InitFlag : u32 {
-    const INIT_FLAC       = ffi::MIX_INIT_FLAC as u32,
-    const INIT_MOD        = ffi::MIX_INIT_MOD as u32,
-    const INIT_MODPLUG    = ffi::MIX_INIT_MODPLUG as u32,
-    const INIT_MP3        = ffi::MIX_INIT_MP3 as u32,
-    const INIT_OGG        = ffi::MIX_INIT_OGG as u32,
-    const INIT_FLUIDSYNTH = ffi::MIX_INIT_FLUIDSYNTH as u32
+bitflags!(pub flags InitFlag : u32 {
+    const INIT_FLAC       = ::ffi::MIX_INIT_FLAC as u32,
+    const INIT_MOD        = ::ffi::MIX_INIT_MOD as u32,
+    const INIT_MODPLUG    = ::ffi::MIX_INIT_MODPLUG as u32,
+    const INIT_MP3        = ::ffi::MIX_INIT_MP3 as u32,
+    const INIT_OGG        = ::ffi::MIX_INIT_OGG as u32,
+    const INIT_FLUIDSYNTH = ::ffi::MIX_INIT_FLUIDSYNTH as u32
 });
 
 impl ToString for InitFlag {