diff --git a/project.clj b/project.clj
index 3adb994..fe081fc 100644
--- a/project.clj
+++ b/project.clj
@@ -19,7 +19,7 @@
   ;; Renovate should keep the versions largely in sync between projects.
   :managed-dependencies [[org.clojure/clojure "1.12.4"]
                          [cheshire "5.13.0"]
-                         [commons-codec "1.20.0"]
+                         [commons-codec "1.21.0"]
                          [commons-io "2.21.0"]
                          [io.dropwizard.metrics/metrics-core "3.2.6"]
                          [org.apache.httpcomponents/httpasyncclient "4.1.5"]