diff --git a/build.sbt b/build.sbt
index 873e9d5..ba2444d 100644
--- a/build.sbt
+++ b/build.sbt
@@ -36,7 +36,7 @@
   "org.scalatra"                    %% "scalatra"                    % ScalatraVersion,
   "org.scalatra"                    %% "scalatra-json"               % ScalatraVersion,
   "org.scalatra"                    %% "scalatra-forms"              % ScalatraVersion,
-  "org.json4s"                      %% "json4s-jackson"              % "3.6.2",
+  "org.json4s"                      %% "json4s-jackson"              % "3.5.2",
   "commons-io"                      % "commons-io"                   % "2.6",
   "io.github.gitbucket"             % "solidbase"                    % "1.0.3",
   "io.github.gitbucket"             % "markedj"                      % "1.0.15",