diff --git a/.github/scripts/depexts/generate-actions.sh b/.github/scripts/depexts/generate-actions.sh
index 285f58eda01..357b3583147 100644
--- a/.github/scripts/depexts/generate-actions.sh
+++ b/.github/scripts/depexts/generate-actions.sh
@@ -137,7 +137,7 @@ ENTRYPOINT ["/opam/entrypoint.sh"]
 EOF
 else
   cat >>$dir/Dockerfile << EOF
-ENTRYPOINT ["nix-shell", "-p", "gnum4", "git", "rsync", "patch", "gnutar", "bzip2", "gnumake", "wget", "ocamlPackages.ocaml", "ocamlPackages.ocaml-compiler-libs", "--run", "/opam/entrypoint.sh"]
+ENTRYPOINT ["nix-shell", "-p", "gnum4", "git", "rsync", "patch", "gnutar", "bzip2", "gnumake", "wget", "ocamlPackages.ocaml", "ocamlPackages.ocaml-compiler-libs", "opam", "--run", "/opam/entrypoint.sh"]
 EOF
 fi