diff --git a/pkgs/development/python-modules/tqdm/default.nix b/pkgs/development/python-modules/tqdm/default.nix
index 95039cc591f..2392a4a9968 100644
--- a/pkgs/development/python-modules/tqdm/default.nix
+++ b/pkgs/development/python-modules/tqdm/default.nix
@@ -21,6 +21,12 @@ buildPythonPackage rec {
 
   buildInputs = [ nose coverage glibcLocales flake8 ];
 
+  postPatch = ''
+    # Remove performance testing.
+    # Too sensitive for on Hydra.
+    rm tqdm/tests/tests_perf.py
+  '';
+
   LC_ALL="en_US.UTF-8";
 
   meta = {