diff --git a/screencast/184-build-defi-api/package-lock.json b/screencast/184-build-defi-api/package-lock.json
index 08a8b47b40..629c864376 100644
--- a/screencast/184-build-defi-api/package-lock.json
+++ b/screencast/184-build-defi-api/package-lock.json
@@ -212,9 +212,9 @@
       }
     },
     "bl": {
-      "version": "1.2.2",
-      "resolved": "https://registry.npmjs.org/bl/-/bl-1.2.2.tgz",
-      "integrity": "sha512-e8tQYnZodmebYDWGH7KMRvtzKXaJHx3BbilrgZCfvyLUYdKpK1t5PSPmpkny/SgiTSCnjfLW7v5rlONXVFkQEA==",
+      "version": "1.2.3",
+      "resolved": "https://registry.npmjs.org/bl/-/bl-1.2.3.tgz",
+      "integrity": "sha512-pvcNpa0UU69UT341rO6AYy4FVAIkUHuZXRIWbq+zHnsVcRzDDjIAhGuuYoi0d//cwIwtt4pkpKycWEfjdV+vww==",
       "requires": {
         "readable-stream": "^2.3.5",
         "safe-buffer": "^5.1.1"