diff --git a/project.clj b/project.clj
index 54a9fba..8e3d862 100644
--- a/project.clj
+++ b/project.clj
@@ -34,7 +34,7 @@
   ;; :managed-dependencies. This prevents endless version conflicts due to deps of deps.
   ;; Renovate should keep the versions largely in sync between projects.
   :managed-dependencies [[org.clojure/clojure "1.12.4"]
-                         [org.clojure/core.async "1.8.741"]
+                         [org.clojure/core.async "1.9.865"]
                          [org.clojure/tools.logging "1.3.1"]
                          [org.clojure/tools.macro "0.2.2"]