diff --git a/alpine/Dockerfile b/alpine/Dockerfile
index e1e8207..f871dac 100644
--- a/alpine/Dockerfile
+++ b/alpine/Dockerfile
@@ -16,7 +16,6 @@ USER jenkins
 
 RUN flutter config --no-cli-animations
 RUN flutter doctor -v
-RUN flutter channel master
 RUN flutter upgrade
 
 USER root