diff --git a/alpine/Dockerfile b/alpine/Dockerfile
index c48532b..a00ad4e 100644
--- a/alpine/Dockerfile
+++ b/alpine/Dockerfile
@@ -21,6 +21,8 @@ USER jenkins
 
 RUN flutter config --no-cli-animations
 RUN flutter doctor -v
+RUN flutter channel master
+RUN flutter upgrade
 
 USER root