diff --git a/pkgs/applications/radio/gnuradio/3.9.nix b/pkgs/applications/radio/gnuradio/3.9.nix
index b6a8ebd2dd8e..80be5b79c8aa 100644
--- a/pkgs/applications/radio/gnuradio/3.9.nix
+++ b/pkgs/applications/radio/gnuradio/3.9.nix
@@ -102,11 +102,11 @@ let
         libunwind
         thrift
       ];
-      pythonRuntime = with python.pkgs; [
+      pythonRuntime = [
         python.pkgs.thrift
         # For gr-perf-monitorx
-        matplotlib
-        networkx
+        python.pkgs.matplotlib
+        python.pkgs.networkx
       ];
       cmakeEnableFlag = "GR_CTRLPORT";
     };