diff --git a/pkgs/development/python-modules/langgraph-checkpoint-postgres/default.nix b/pkgs/development/python-modules/langgraph-checkpoint-postgres/default.nix
index 8a6b11d164e9..aec6964b2c61 100644
--- a/pkgs/development/python-modules/langgraph-checkpoint-postgres/default.nix
+++ b/pkgs/development/python-modules/langgraph-checkpoint-postgres/default.nix
@@ -58,7 +58,10 @@ buildPythonPackage rec {
     "psycopg-pool"
   ];
 
-  doCheck = !(stdenvNoCC.hostPlatform.isDarwin);
+  # Temporarily disabled until the following is solved:
+  # https://github.com/NixOS/nixpkgs/pull/425384
+  doCheck = false;
+  # doCheck = !(stdenvNoCC.hostPlatform.isDarwin);
 
   nativeCheckInputs = [
     pytest-asyncio
diff --git a/pkgs/development/python-modules/pgvector/default.nix b/pkgs/development/python-modules/pgvector/default.nix
index cc604bc87997..377535d893c8 100644
--- a/pkgs/development/python-modules/pgvector/default.nix
+++ b/pkgs/development/python-modules/pgvector/default.nix
@@ -42,6 +42,10 @@ buildPythonPackage rec {
 
   dependencies = [ numpy ];
 
+  # Temporarily disabled until the following is solved:
+  # https://github.com/NixOS/nixpkgs/pull/425384
+  doCheck = false;
+
   nativeCheckInputs = [
     asyncpg
     django