diff --git a/pkgs/development/python-modules/moto/default.nix b/pkgs/development/python-modules/moto/default.nix
index ddc3896c6a55..7f9b7010c52b 100644
--- a/pkgs/development/python-modules/moto/default.nix
+++ b/pkgs/development/python-modules/moto/default.nix
@@ -37,7 +37,8 @@ buildPythonPackage rec {
 
   postPatch = ''
     substituteInPlace setup.py \
-      --replace "ecdsa<0.15" "ecdsa"
+      --replace "ecdsa<0.15" "ecdsa" \
+      --replace "idna<3,>=2.5" "idna" \
   '';
 
   patches = [