diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 6f6bdc844ef9..219dae511346 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -19122,7 +19122,9 @@ with pkgs;
 
   openbabel2 = callPackage ../development/libraries/openbabel/2.nix { };
 
-  openbabel3 = callPackage ../development/libraries/openbabel { };
+  openbabel3 = callPackage ../development/libraries/openbabel {
+    python = python3;
+  };
 
   opencascade = callPackage ../development/libraries/opencascade {
     inherit (darwin.apple_sdk.frameworks) OpenCL Cocoa;