diff --git a/CHANGELOG.md b/CHANGELOG.md
index d644afb..2f6c22b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,10 @@
 # Change Log
 All notable changes to this project will be documented in this file. This change log follows the conventions of [keepachangelog.com](http://keepachangelog.com/).
 
+## [1.2.2] - 2026-01-06
+
+- Update to org.quartz-scheduler/quartz "2.5.2"
+
 ## [1.2.1] - 2025-10-25
 
 - Update to org.quartz-scheduler/quartz "2.5.1"
diff --git a/README.md b/README.md
index 7c3357a..d8f9c7f 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@
 # Summary
 
 [Cronut](https://github.com/factorhouse/cronut) provides a data-first [Clojure](https://clojure.org/) wrapper
-for [Quartz Scheduler](https://github.com/quartz-scheduler/quartz) version `2.5.1`, compatible
+for [Quartz Scheduler](https://github.com/quartz-scheduler/quartz) version `2.5.2`, compatible
 with [Jakarta](https://en.wikipedia.org/wiki/Jakarta_EE).
 
 Cronut supports **in-memory** scheduling of jobs within a single JVM. JDBC and distributed jobstore are not supported.
diff --git a/project.clj b/project.clj
index f4a4b31..a1cdcfb 100644
--- a/project.clj
+++ b/project.clj
@@ -9,15 +9,15 @@
 
   :plugins [[dev.weavejester/lein-cljfmt "0.15.3"]]
 
-  :dependencies [[org.clojure/clojure "1.12.3"]
-                 [org.clojure/tools.logging "1.3.0"]
-                 [org.quartz-scheduler/quartz "2.5.1" :exclusions [org.slf4j/slf4j-api]]]
+  :dependencies [[org.clojure/clojure "1.12.4"]
+                 [org.clojure/tools.logging "1.3.1"]
+                 [org.quartz-scheduler/quartz "2.5.2" :exclusions [org.slf4j/slf4j-api]]]
 
   :profiles {:dev   {:resource-paths ["dev-resources"]
-                     :dependencies   [[ch.qos.logback/logback-classic "1.5.20"]
+                     :dependencies   [[ch.qos.logback/logback-classic "1.5.23"]
                                       [org.slf4j/slf4j-api "2.0.17"]
                                       [org.clojure/core.async "1.8.741"]
-                                      [clj-kondo "2025.10.23" :exclusions [org.clojure/tools.reader]]]}
+                                      [clj-kondo "2025.12.23" :exclusions [org.clojure/tools.reader]]]}
              :smoke {:pedantic? :abort}}
 
   :aliases {"check"  ["with-profile" "+smoke" "check"]