diff --git a/pkgs/development/libraries/libdeflate/default.nix b/pkgs/development/libraries/libdeflate/default.nix
index c59ace0aa23e..5f62f8b70647 100644
--- a/pkgs/development/libraries/libdeflate/default.nix
+++ b/pkgs/development/libraries/libdeflate/default.nix
@@ -9,13 +9,13 @@
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "libdeflate";
-  version = "1.20";
+  version = "1.21";
 
   src = fetchFromGitHub {
     owner = "ebiggers";
     repo = "libdeflate";
     rev = "v${finalAttrs.version}";
-    sha256 = "sha256-kHLdu/Pb94+arj98Jjp57FpvWbAXW49s9cxCA1cf898=";
+    sha256 = "sha256-JsPvftpl9drmhlNdqorr92q7dnYzXpIIO8prMPPGHFk=";
   };
 
   cmakeFlags = lib.optionals stdenv.hostPlatform.isStatic [ "-DLIBDEFLATE_BUILD_SHARED_LIB=OFF" ];