diff --git a/pkgs/development/python-modules/fastapi/default.nix b/pkgs/development/python-modules/fastapi/default.nix
index f4e5b5cb513f..81e51b02150f 100644
--- a/pkgs/development/python-modules/fastapi/default.nix
+++ b/pkgs/development/python-modules/fastapi/default.nix
@@ -104,6 +104,8 @@ buildPythonPackage rec {
   disabledTests = [
     # Coverage test
     "test_fastapi_cli"
+    # ResourceWarning: Unclosed <MemoryObjectSendStream>
+    "test_openapi_schema"
   ];
 
   disabledTestPaths = [