diff --git a/pkgs/development/libraries/luabind/default.nix b/pkgs/development/libraries/luabind/default.nix
index b36e6f34c826..67605dda51d9 100644
--- a/pkgs/development/libraries/luabind/default.nix
+++ b/pkgs/development/libraries/luabind/default.nix
@@ -7,7 +7,7 @@ stdenv.mkDerivation rec {
   src = fetchFromGitHub {
     owner = "luabind";
     repo = "luabind";
-    rev = "v${version}";
+    rev = version;
     sha256 = "sha256-sK1ca2Oj9yXdmxyXeDO3k8YZ1g+HxIXLhvdTWdPDdag=";
   };
 
diff --git a/pkgs/development/libraries/nco/default.nix b/pkgs/development/libraries/nco/default.nix
index 7262d7f661c8..b90d64c2ffcb 100644
--- a/pkgs/development/libraries/nco/default.nix
+++ b/pkgs/development/libraries/nco/default.nix
@@ -7,7 +7,7 @@ stdenv.mkDerivation rec {
   src = fetchFromGitHub {
     owner = "nco";
     repo = "nco";
-    rev = "${version}";
+    rev = version;
     sha256 = "sha256-KrFRBlD3z/sjKIvxmE0s/xCILQmESecilnlUGzDDICw=";
   };