diff --git a/pkgs/development/php-packages/spx/default.nix b/pkgs/development/php-packages/spx/default.nix
index 849e9c23d842..bb6e2b61c95b 100644
--- a/pkgs/development/php-packages/spx/default.nix
+++ b/pkgs/development/php-packages/spx/default.nix
@@ -15,7 +15,7 @@ buildPecl {
   src = fetchFromGitHub {
     owner = "NoiseByNorthwest";
     repo = "php-spx";
-    rev = "v${version}";
+    tag = "v${version}";
     hash = "sha256-P53g/o4i+QETWdErZaGA3AREvnr8kL9h0B1BMQlKdFA=";
   };