diff --git a/pkgs/applications/misc/calcurse/default.nix b/pkgs/applications/misc/calcurse/default.nix
index ba8edb2baa50..8a83c593986a 100644
--- a/pkgs/applications/misc/calcurse/default.nix
+++ b/pkgs/applications/misc/calcurse/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
 
   postInstall = ''
     patchShebangs .
-    buildPythonPath ${python3Packages.httplib2}
+    buildPythonPath "${python3Packages.httplib2} ${python3Packages.oauth2client}"
     patchPythonScript $out/bin/calcurse-caldav
   '';