diff --git a/.gitignore b/.gitignore
index 79c113f..a5eeaff 100644
--- a/.gitignore
+++ b/.gitignore
@@ -43,3 +43,10 @@ app.*.map.json
 /android/app/debug
 /android/app/profile
 /android/app/release
+
+# Signing credentials — never commit these
+*.p12
+*.pfx
+*.cer
+*.mobileprovision
+*.certSigningRequest