diff --git a/.gitignore b/.gitignore
index 548213a63..dff3ed7be 100644
--- a/.gitignore
+++ b/.gitignore
@@ -53,6 +53,11 @@ CMakeLists.txt.user
 *.BASE.*
 *.LOCAL.*
 
+#
+# AI tools
+#
+.claude
+
 #
 # IDE & other software
 #