diff --git a/data/scripts/acme/acme-ollie-ensure b/data/scripts/acme/acme-ollie-ensure
index 75bb2a2..f1dc141 100755
--- a/data/scripts/acme/acme-ollie-ensure
+++ b/data/scripts/acme/acme-ollie-ensure
@@ -37,6 +37,9 @@ AGENT="assistant"
 # Ensure session exists (with project root as cwd)
 if ! ollie-9p read "session/$SESSION/env" >/dev/null 2>&1; then
     printf 'name=%s\ncwd=%s\n' "$SESSION" "$project_root" | ollie-9p write "session/new" 2>/dev/null || true
+else
+    # Update cwd in case project root changed
+    printf 'cwd=%s\n' "$project_root" | ollie-9p write "session/$SESSION/cfg" 2>/dev/null || true
 fi
 
 # Ensure agent exists