diff --git a/project.clj b/project.clj
index 8e6eb79..fd387b6 100644
--- a/project.clj
+++ b/project.clj
@@ -11,7 +11,9 @@
                  [metosin/muuntaja        "0.6.8"]
                  [metosin/reitit          "0.5.18"]
                 ;; Outgoing HTTP
-                 [hato               "0.9.0"]]
+                 [hato               "0.9.0"]
+                 [cheshire/cheshire  "5.11.0"]
+                 [com.cognitect/transit-clj "1.0.333"]]
   :main ^:skip-aot activity-pub-poc.core
   :target-path "target/%s"
   :profiles {:uberjar {:aot :all}})