diff --git a/pkgs/development/libraries/c-blosc/default.nix b/pkgs/development/libraries/c-blosc/default.nix
index 6f59c96d2bc..b03f3be904c 100644
--- a/pkgs/development/libraries/c-blosc/default.nix
+++ b/pkgs/development/libraries/c-blosc/default.nix
@@ -2,13 +2,13 @@
 
 stdenv.mkDerivation rec {
   pname = "c-blosc";
-  version = "1.21.0";
+  version = "1.21.1";
 
   src = fetchFromGitHub {
     owner = "Blosc";
     repo = "c-blosc";
     rev = "v${version}";
-    sha256 = "sha256-B8SFOc1oGgU5AGAbkqe5oz045H08TnymNAbzz2oOKoo=";
+    sha256 = "sha256-6SKEyciwDOxcbO8chvmxrLCxLkc93zxo6eH0c/lRyT8=";
   };
 
   nativeBuildInputs = [ cmake ];