diff --git a/kernel-build.sh b/kernel-build.sh
index 141d490..d1a52f2 100755
--- a/kernel-build.sh
+++ b/kernel-build.sh
@@ -24,7 +24,7 @@
 ${PROXY}
 
 ENV DEBIAN_FRONTEND noninteractive 
-RUN apt-get update && apt-get upgrade -yy && apt-get install -yy \
+RUN apt-get update && apt-get install -yy \
 	bc \
 	build-essential \
 	git \