diff --git a/.gitignore b/.gitignore
index c2b8dd5..6935d36 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,6 +4,9 @@
 # Ralph workplan plugin (local tooling, not project source)
 ralph-workplan/
 
+# Runtime evidence store (generated by evidence.py during builds/tests)
+.markidocx/
+
 # ---> Python
 # Byte-compiled / optimized / DLL files
 __pycache__/