diff --git a/Cargo.toml b/Cargo.toml
index cb204775..4763a1c9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,8 +12,8 @@ name = "sdl2_image"
 path = "src/sdl2_image/lib.rs"
 
 [dependencies]
-bitflags = "0.1.1"
-libc = "0.1.6"
+bitflags = "^0.3.2"
+libc = "^0.1"
 sdl2 = "0.9"
 sdl2-sys = "0.6"