diff --git a/pkgs/by-name/cb/cbor-diag/Gemfile.lock b/pkgs/by-name/cb/cbor-diag/Gemfile.lock
index 3fb8993319ef..67a53ba2856c 100644
--- a/pkgs/by-name/cb/cbor-diag/Gemfile.lock
+++ b/pkgs/by-name/cb/cbor-diag/Gemfile.lock
@@ -3,7 +3,7 @@ GEM
   specs:
     cbor-canonical (0.1.2)
     cbor-deterministic (0.1.3)
-    cbor-diag (0.9.6)
+    cbor-diag (0.10.2)
       cbor-canonical
       cbor-deterministic
       cbor-packed
@@ -24,4 +24,4 @@ DEPENDENCIES
   cbor-diag
 
 BUNDLED WITH
-   2.6.6
+   2.7.1
diff --git a/pkgs/by-name/cb/cbor-diag/gemset.nix b/pkgs/by-name/cb/cbor-diag/gemset.nix
index c01ae16a4451..721d4678ff9f 100644
--- a/pkgs/by-name/cb/cbor-diag/gemset.nix
+++ b/pkgs/by-name/cb/cbor-diag/gemset.nix
@@ -32,10 +32,10 @@
     platforms = [ ];
     source = {
       remotes = [ "https://rubygems.org" ];
-      sha256 = "0c0a4pfvnhkh8dmih1igm7qm2ligzvccppjskpz85v69xizfsj71";
+      sha256 = "1w64msy9wdyagcl2rcr7lynmdrazjb8wr6406r47x6k007q8jpd3";
       type = "gem";
     };
-    version = "0.9.6";
+    version = "0.10.2";
   };
   cbor-packed = {
     groups = [ "default" ];