diff --git a/pkgs/development/ocaml-modules/genspio/default.nix b/pkgs/development/ocaml-modules/genspio/default.nix
index 22b93c11ed49..80ceb2e643f0 100644
--- a/pkgs/development/ocaml-modules/genspio/default.nix
+++ b/pkgs/development/ocaml-modules/genspio/default.nix
@@ -6,7 +6,7 @@
   fmt,
 }:
 
-buildDunePackage rec {
+buildDunePackage (finalAttrs: {
   pname = "genspio";
   version = "0.0.3";
 
@@ -14,8 +14,8 @@ buildDunePackage rec {
 
   src = fetchFromGitHub {
     owner = "hammerlab";
-    repo = pname;
-    rev = "${pname}.${version}";
+    repo = "genspio";
+    rev = "genspio.${finalAttrs.version}";
     sha256 = "sha256:1788cnn10idp5i1hggg4pys7k0w8m3h2p4xa42jipfg4cpj7shaf";
   };
 
@@ -35,4 +35,4 @@ buildDunePackage rec {
     license = lib.licenses.asl20;
     maintainers = [ ];
   };
-}
+})