diff --git a/bindings/protobuf/default.nix b/bindings/protobuf/default.nix
index 85bc762..51f3128 100644
--- a/bindings/protobuf/default.nix
+++ b/bindings/protobuf/default.nix
@@ -22,7 +22,7 @@ let
       owner = "protocolbuffers";
       repo = "protobuf";
       rev = "v${version}";
-      sha256 = "sha256-cSN/85rfSyznU4=";
+      sha256 = "honnvgmT1u26vv2AdtLfHou7B640PXaV3s0XXNkd/QE=";
     };
   
     # re-create submodule logic
diff --git a/bindings/valhalla/default.nix b/bindings/valhalla/default.nix
index 046e99e..995ddbb 100644
--- a/bindings/valhalla/default.nix
+++ b/bindings/valhalla/default.nix
@@ -9,7 +9,7 @@ stdenv.mkDerivation rec {
     owner = "valhalla";
     repo = "valhalla";
     rev = "3.4.0";
-    sha256 = "23432";
+    sha256 = "honnvgmT1u26vv2AdtLfHou7B640PXaV3s0XXNkd/QE=";
     fetchSubmodules = true;
   };