diff --git a/pkgs/development/tools/misc/uncrustify/default.nix b/pkgs/development/tools/misc/uncrustify/default.nix
index 57c57969a88..561ae0c58c8 100644
--- a/pkgs/development/tools/misc/uncrustify/default.nix
+++ b/pkgs/development/tools/misc/uncrustify/default.nix
@@ -3,13 +3,13 @@
 stdenv.mkDerivation rec {
   name = "${product}-${version}";
   product = "uncrustify";
-  version = "0.64";
+  version = "0.66";
 
   src = fetchFromGitHub {
     owner = product;
     repo = product;
     rev = name;
-    sha256 = "0gvgv44aqrh7cmj4ji8dpbhp47cklvajlc3s9d9z24x96dhp2v97";
+    sha256 = "156y71yf2xxskvikbn6yjfv8xgnsrrjij08irv21z0n7nx35jgmm";
   };
 
   nativeBuildInputs = [ cmake ];