diff --git a/debian/pre-install.sh b/debian/pre-install.sh
index d87fdb5..d0309b2 100755
--- a/debian/pre-install.sh
+++ b/debian/pre-install.sh
@@ -1,5 +1,8 @@
 #!/bin/sh
 
+# Set non-interactive mode for apt-get
+export DEBIAN_FRONTEND=noninteractive
+
 #upgrade the packages
 apt-get update && apt-get upgrade -y
 
diff --git a/ubuntu/pre-install.sh b/ubuntu/pre-install.sh
index 8e55453..b013795 100755
--- a/ubuntu/pre-install.sh
+++ b/ubuntu/pre-install.sh
@@ -1,5 +1,8 @@
 #!/bin/sh
 
+# Set non-interactive mode for apt-get
+export DEBIAN_FRONTEND=noninteractive
+
 #upgrade the packages
 apt-get update && apt-get upgrade -y