diff --git a/pkgs/development/libraries/aws-c-common/default.nix b/pkgs/development/libraries/aws-c-common/default.nix
index 5cf9de861cdf..6bb9fc493fe8 100644
--- a/pkgs/development/libraries/aws-c-common/default.nix
+++ b/pkgs/development/libraries/aws-c-common/default.nix
@@ -7,13 +7,13 @@
 
 stdenv.mkDerivation rec {
   pname = "aws-c-common";
-  version = "0.9.17";
+  version = "0.9.21";
 
   src = fetchFromGitHub {
     owner = "awslabs";
     repo = pname;
     rev = "v${version}";
-    hash = "sha256-Ee3wkgIOTsZn2PgHoaO5HqblXuOacuKm5vUwkl4Dg+4=";
+    hash = "sha256-lJCQPatwZeHpuzQni6SMMGYBH4iESQH8ofFgmRbxtnM=";
   };
 
   nativeBuildInputs = [ cmake ];