diff --git a/package.json b/package.json
index 7b6506b36..adb8924a6 100644
--- a/package.json
+++ b/package.json
@@ -83,7 +83,7 @@
     "bookmarks": "0.31.0",
     "bracket-matcher": "0.64.0",
     "command-palette": "0.30.0",
-    "deprecation-cop": "0.19.0",
+    "deprecation-cop": "0.20.0",
     "dev-live-reload": "0.36.0",
     "encoding-selector": "0.11.0",
     "exception-reporting": "0.21.0",