diff --git a/templates/chisel/nix/gcd/gcd.nix b/templates/chisel/nix/gcd/gcd.nix
index 4442dcc..c0ea274 100644
--- a/templates/chisel/nix/gcd/gcd.nix
+++ b/templates/chisel/nix/gcd/gcd.nix
@@ -24,7 +24,7 @@ let
     publishMillModule {
       name = "chisel";
       version = "9999";
-      outputHash = "sha256-fuorZlUbH+oDt6XGHBqMmOXaRHzZVntRgIln1NeYLeQ=";
+      outputHash = "sha256-wXDmafSEoJxg1mv6uleKtRDCuFuTdEt+FmiH6NO7anc=";
       publishPhase = "mill -i unipublish.publishLocal";
       nativeBuildInputs = [ git ];
     };
@@ -54,7 +54,7 @@ let
             fileset = unions [ ./../../build.mill ./../../common.mill ];
           };
         millDepModules = [ chisel ];
-        millDepsHash = "sha256-Vav1Svh06MUNO1KI0XcioxWbhGZnADXa0vOrbWDZI+U=";
+        millDepsHash = "sha256-saHZcLBulNESco16mqwgiPndFA/V+4uexnqgLCinuWs=";
       };
 
       editable = self.overrideAttrs (_: {
diff --git a/templates/chisel/nix/pkgs/dependencies/default.nix b/templates/chisel/nix/pkgs/dependencies/default.nix
index b8c8d38..bd9afa2 100644
--- a/templates/chisel/nix/pkgs/dependencies/default.nix
+++ b/templates/chisel/nix/pkgs/dependencies/default.nix
@@ -1,6 +1,7 @@
 { pkgs
 , stdenv
 , mill
+, add-determinism
 , ...
 }:
 { name
@@ -42,6 +43,10 @@ stdenv.mkDerivation {
     runHook preInstall
     mkdir -p $out/.ivy2
     mv $TMPDIR/ivy/local $out/.ivy2/local
+
+    export SOURCE_DATE_EPOCH=1669810380
+    find $out -type f -name '*.jar' -exec '${add-determinism}/bin/add-determinism' -j "$NIX_BUILD_CORES" '{}' ';'
+
     runHook postInstall
   '';
 }