diff --git a/pkgs/applications/editors/vscode/extensions/default.nix b/pkgs/applications/editors/vscode/extensions/default.nix
index 8f9a57387b9e..f22919a6651c 100644
--- a/pkgs/applications/editors/vscode/extensions/default.nix
+++ b/pkgs/applications/editors/vscode/extensions/default.nix
@@ -3017,8 +3017,8 @@ let
         mktplcRef = {
           name = "asn1js";
           publisher = "lapo";
-          version = "0.1.4";
-          hash = "sha256-utbIKlwNHnJZj/51f8hEDmUA/A26De/gY73iT4tXKRU=";
+          version = "0.2.1";
+          hash = "sha256-/75tsueW1PQIHN6YOLajREcMbRnzxzBIGnd7LGAxwBs=";
         };
         meta = {
           description = "Decode ASN.1 content inside VSCode";