diff --git a/data/cdn_header_keys.json b/data/cdn_header_keys.json
index 2f5e264..9c4fda9 100644
--- a/data/cdn_header_keys.json
+++ b/data/cdn_header_keys.json
@@ -2,6 +2,8 @@
     "xcs",
     "via",
     "x-via",
+    "x-cdn",
+    "x-cdn-forward",
     "x-ser",
     "x-cf1",
     "cache",
@@ -11,6 +13,7 @@
     "x-hit-cache",
     "x-cache-status",
     "x-cache-hits",
+    "x-cache-lookup",
     "cc_cache",
     "webcache",
     "chinacache",
@@ -20,14 +23,20 @@
     "x-github-request-id",
     "x-sucuri-id",
     "x-amz-cf-id",
+    "x-airee-node",
     "x-cdn-provider",
     "x-fastly",
+    "x-iinfo",
+    "x-llid",
+    "sozu-id",
+    "x-cf-tsc",
     "x-ws-request-id",
     "fss-cache",
     "powered-by-chinacache",
     "verycdn",
     "yunjiasu",
     "skyparkcdn",
+    "x-beluga-cache-status",
     "x-content-type-options",
     "x-download-options",
     "x-proxy-node",
@@ -36,5 +45,6 @@
     "etag",
     "expires",
     "pragma",
-    "cache-control"
+    "cache-control",
+    "last-modified"
 ]