diff --git a/pkgs/development/tools/parsing/bison/3.x.nix b/pkgs/development/tools/parsing/bison/3.x.nix
index 09d7daa97bf..57fed5c9e8d 100644
--- a/pkgs/development/tools/parsing/bison/3.x.nix
+++ b/pkgs/development/tools/parsing/bison/3.x.nix
@@ -2,11 +2,11 @@
 
 stdenv.mkDerivation rec {
   pname = "bison";
-  version = "3.3.1";
+  version = "3.3.2";
 
   src = fetchurl {
     url = "mirror://gnu/${pname}/${pname}-${version}.tar.gz";
-    sha256 = "0sz6rzmfz5scian0a28lrvkrsd0108dmxrxpqh4nyi2ahlglbma1";
+    sha256 = "1lfvns1f6xamz9905fakzkxh4zmk1wa9w33vxcq78fc5841ivnhg";
   };
 
   nativeBuildInputs = [ m4 perl ] ++ stdenv.lib.optional stdenv.isSunOS help2man;