diff --git a/pkgs/development/python-modules/slack-sdk/default.nix b/pkgs/development/python-modules/slack-sdk/default.nix
index f8855e4c760a..7e5cb4ba0935 100644
--- a/pkgs/development/python-modules/slack-sdk/default.nix
+++ b/pkgs/development/python-modules/slack-sdk/default.nix
@@ -6,6 +6,7 @@
   boto3,
   buildPythonPackage,
   fetchFromGitHub,
+  fetchpatch,
   flake8,
   moto,
   psutil,
@@ -30,6 +31,14 @@ buildPythonPackage rec {
     hash = "sha256-yjYpALyHSTLQSuwd6xth7nqfi3m1C9tqnWrrVRmI220=";
   };
 
+  patches = [
+    (fetchpatch {
+      name = "fix-aiohttp-test_init_with_loop.patch";
+      url = "https://github.com/slackapi/python-slack-sdk/pull/1697.patch";
+      hash = "sha256-rHaJBH/Yxm3Sz/jmzc4G1pVJJXz0PL2880bz5n7w3ck=";
+    })
+  ];
+
   build-system = [ setuptools ];
 
   dependencies = [