diff --git a/pkgs/development/coq-modules/StructTact/default.nix b/pkgs/development/coq-modules/StructTact/default.nix
index a20381a36662..e5082fcd6593 100644
--- a/pkgs/development/coq-modules/StructTact/default.nix
+++ b/pkgs/development/coq-modules/StructTact/default.nix
@@ -21,11 +21,11 @@ mkCoqDerivation {
       (case (range "8.5" "8.13") "20181102")
     ] null;
   release."20230107".rev = "2f2ff253be29bb09f36cab96d036419b18a95b00";
-  release."20230107".sha256 = "sha256-4mWdnWD8m1ddgqWHqzjqclhinXJaB/YoLlmLeeL0yZA=";
+  release."20230107".hash = "sha256-4mWdnWD8m1ddgqWHqzjqclhinXJaB/YoLlmLeeL0yZA=";
   release."20210328".rev = "179bd5312e9d8b63fc3f4071c628cddfc496d741";
-  release."20210328".sha256 = "sha256:1y5r1zm3hli10ah6lnj7n8hxad6rb6rgldd0g7m2fjibzvwqzhdg";
+  release."20210328".hash = "sha256:1y5r1zm3hli10ah6lnj7n8hxad6rb6rgldd0g7m2fjibzvwqzhdg";
   release."20181102".rev = "82a85b7ec07e71fa6b30cfc05f6a7bfb09ef2510";
-  release."20181102".sha256 = "08zry20flgj7qq37xk32kzmg4fg6d4wi9m7pf9aph8fd3j2a0b5v";
+  release."20181102".hash = "sha256:08zry20flgj7qq37xk32kzmg4fg6d4wi9m7pf9aph8fd3j2a0b5v";
 
   propagatedBuildInputs = [ stdlib ];
 }