diff --git a/pkgs/development/tools/open-policy-agent/default.nix b/pkgs/development/tools/open-policy-agent/default.nix
index c175d788b355..243810ef77a0 100644
--- a/pkgs/development/tools/open-policy-agent/default.nix
+++ b/pkgs/development/tools/open-policy-agent/default.nix
@@ -11,13 +11,13 @@ assert enableWasmEval && stdenv.isDarwin -> builtins.throw "building with wasm o
 
 buildGoModule rec {
   pname = "open-policy-agent";
-  version = "0.63.0";
+  version = "0.64.0";
 
   src = fetchFromGitHub {
     owner = "open-policy-agent";
     repo = "opa";
     rev = "v${version}";
-    hash = "sha256-yXYyRl0ZDgS6eB2pB0Iqi3DiBGcIO3Vdet9RLSOczkU=";
+    hash = "sha256-BguL9ph7lNzOJs9s2l7jt/SjmD5Wy0MPrwIiEXL/Ip4=";
   };
 
   vendorHash = null;