diff --git a/modules/reitit-openapi/project.clj b/modules/reitit-openapi/project.clj
index 18f9a590..2da2ce5b 100644
--- a/modules/reitit-openapi/project.clj
+++ b/modules/reitit-openapi/project.clj
@@ -9,4 +9,5 @@
   :plugins [[lein-parent "0.3.9"]]
   :parent-project {:path "../../project.clj"
                    :inherit [:deploy-repositories :managed-dependencies]}
-  :dependencies [[metosin/reitit-core]])
+  :dependencies [[metosin/reitit-core]
+                 [metosin/muuntaja]])