diff --git a/.gitignore b/.gitignore
index 2f14fba..fce23af 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,3 +7,11 @@ __pycache__/
 
 # Ignore prototype scripts
 prototype_*.py
+
+# Shell secrets
+*.secret
+
+# Certificate files
+*.pem
+*.key
+*.crt