diff --git a/kcidb/cache/__init__.py b/kcidb/cache/__init__.py
index 73258c3f..d405d362 100644
--- a/kcidb/cache/__init__.py
+++ b/kcidb/cache/__init__.py
@@ -157,3 +157,9 @@ def fetch(self, url):
         if blob.exists():
             return blob.download_as_bytes()
         return None
+
+    def empty(self):
+        """Empty the cache (remove all contents)."""
+        bucket = self.client.bucket(self.bucket_name)
+        for blob in bucket.list_blobs():
+            blob.delete()