diff --git a/.gitignore b/.gitignore
index 63631b0e..b6c612a4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -237,6 +237,10 @@ package.json
 package-lock.json
 .worktrees/
 .gstack/
+
+# Core dumps from crashed processes (e.g. core.12345)
+core.[0-9]*
+**/core.[0-9]*
 .gitnexus
 
 # graphify knowledge graph outputs