diff --git a/pkgs/development/python-modules/willow/default.nix b/pkgs/development/python-modules/willow/default.nix
index 36e258874a33..987eaad438dc 100644
--- a/pkgs/development/python-modules/willow/default.nix
+++ b/pkgs/development/python-modules/willow/default.nix
@@ -43,6 +43,11 @@ buildPythonPackage rec {
   ]
   ++ lib.concatAttrValues optional-dependencies;
 
+  disabledTests = [
+    # Flaky: wand.exceptions.MissingDelegateError: no decode delegate for this image format
+    "test_gif"
+  ];
+
   meta = {
     description = "Python image library that sits on top of Pillow, Wand and OpenCV";
     homepage = "https://github.com/torchbox/Willow/";