diff --git a/Dockerfile b/Dockerfile
index c6d46fc..e1d2645 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -11,7 +11,7 @@ LABEL maintainer="thespad"
 
 # environment settings
 ARG UNIFI_BRANCH="stable"
-ARG DEBIAN_FRONTEND="noninteractive"
+ENV DEBIAN_FRONTEND="noninteractive"
 ARG ENVSUBST_VERSION=v1.4.2
 
 RUN \
diff --git a/Dockerfile.aarch64 b/Dockerfile.aarch64
index 2c5e235..a26073f 100644
--- a/Dockerfile.aarch64
+++ b/Dockerfile.aarch64
@@ -11,7 +11,7 @@ LABEL maintainer="thespad"
 
 # environment settings
 ARG UNIFI_BRANCH="stable"
-ARG DEBIAN_FRONTEND="noninteractive"
+ENV DEBIAN_FRONTEND="noninteractive"
 ARG ENVSUBST_VERSION=v1.4.2
 
 RUN \