diff --git a/checks.nix b/checks.nix
index 923faf5..d0ee54f 100644
--- a/checks.nix
+++ b/checks.nix
@@ -17,12 +17,17 @@
 
     echo "=== Checking key Python modules ==="
     SITE=${hermes-agent}/lib/python3.12/site-packages
-    for mod in agent cli.py gateway cron tools run_agent.py model_tools.py minisweagent_path.py acp_adapter honcho_integration; do
+    for mod in agent cli.py gateway cron tools run_agent.py model_tools.py acp_adapter honcho_integration; do
       if [ ! -e "$SITE/$mod" ] && [ ! -e "$SITE/$mod.py" ]; then
         echo "FAIL: Missing module $mod"
         exit 1
       fi
     done
+    # mini-swe: upstream renamed minisweagent_path.py → mini_swe_runner.py
+    if [ ! -e "$SITE/minisweagent_path.py" ] && [ ! -e "$SITE/mini_swe_runner.py" ]; then
+      echo "FAIL: Missing module minisweagent_path.py or mini_swe_runner.py"
+      exit 1
+    fi
     echo "PASS: All key modules present"
 
     echo "=== Checking wrapped PATH includes runtime deps ==="
diff --git a/package.nix b/package.nix
index 048b261..f22a28e 100644
--- a/package.nix
+++ b/package.nix
@@ -226,14 +226,19 @@ pythonPackages.buildPythonApplication {
   # Don't run tests during build
   doCheck = false;
 
-  # Upstream pyproject.toml is missing minisweagent_path from py-modules.
-  # Also ensure mini-swe-agent/src is importable.
+  # Upstream pyproject.toml may be missing minisweagent_path / mini_swe_runner
+  # from py-modules. Also ensure mini-swe-agent/src is importable.
   postPatch = ''
     # Fix: add minisweagent_path.py to py-modules if missing from pyproject.toml
     if [ -f minisweagent_path.py ] && ! grep -q minisweagent_path pyproject.toml; then
       sed -i 's/py-modules = \[/py-modules = ["minisweagent_path", /' pyproject.toml
     fi
 
+    # Fix: add mini_swe_runner.py to py-modules if missing (upstream rename)
+    if [ -f mini_swe_runner.py ] && ! grep -q mini_swe_runner pyproject.toml; then
+      sed -i 's/py-modules = \[/py-modules = ["mini_swe_runner", /' pyproject.toml
+    fi
+
     # Make mini-swe-agent importable by copying src into the package
     if [ -d mini-swe-agent/src/minisweagent ]; then
       cp -r mini-swe-agent/src/minisweagent .