diff --git a/app/Dockerfile b/app/Dockerfile
index d358fd6..1962226 100644
--- a/app/Dockerfile
+++ b/app/Dockerfile
@@ -5,7 +5,7 @@ ENV PATH="/mattermost/bin:${PATH}"
 RUN apt-get update && apt-get -y install curl netcat
 RUN mkdir -p /mattermost/data
 
-ENV MM_VERSION=3.8.2
+ENV MM_VERSION=3.9.0
 
 RUN curl https://releases.mattermost.com/$MM_VERSION/mattermost-team-$MM_VERSION-linux-amd64.tar.gz | tar -xvz
 
diff --git a/app/Dockerfile-enterprise b/app/Dockerfile-enterprise
index da9a522..06fe861 100644
--- a/app/Dockerfile-enterprise
+++ b/app/Dockerfile-enterprise
@@ -5,7 +5,7 @@ ENV PATH="/mattermost/bin:${PATH}"
 RUN apt-get update && apt-get -y install curl netcat
 RUN mkdir -p /mattermost/data
 
-ENV MM_VERSION=3.8.2
+ENV MM_VERSION=3.9.0
 
 RUN curl https://releases.mattermost.com/$MM_VERSION/mattermost-$MM_VERSION-linux-amd64.tar.gz | tar -xvz