diff --git a/pkgs/development/coq-modules/RustExtraction/default.nix b/pkgs/development/coq-modules/RustExtraction/default.nix
index b9d2d731bcd7..b8194d5c335b 100644
--- a/pkgs/development/coq-modules/RustExtraction/default.nix
+++ b/pkgs/development/coq-modules/RustExtraction/default.nix
@@ -36,8 +36,8 @@ mkCoqDerivation {
       ]
       null;
 
-  release."0.1.0".sha256 = "+Of/DP2Vjsa7ASKswjlvqqhcmDhC9WrozridedNZQkY=";
-  release."0.1.1".sha256 = "CPZ5J9knJ1aYoQ7RQN8YFSpxqJXjgQaxIA4F8G6X4tM=";
+  release."0.1.0".hash = "sha256:+Of/DP2Vjsa7ASKswjlvqqhcmDhC9WrozridedNZQkY=";
+  release."0.1.1".hash = "sha256:CPZ5J9knJ1aYoQ7RQN8YFSpxqJXjgQaxIA4F8G6X4tM=";
 
   releaseRev = v: "v${v}";