diff --git a/Dockerfile b/Dockerfile
index cb03056..0a9448b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -82,8 +82,7 @@ RUN \
 	apt-utils \
 	locales && \
  echo "**** install packages ****" && \
- apt-get install --no-install-recommends -y \
-	ca-certificates \
+ apt-get install -y \
 	curl \
 	gnupg \
 	libc6 \
diff --git a/Dockerfile.aarch64 b/Dockerfile.aarch64
index c6fce6c..b12f9c0 100644
--- a/Dockerfile.aarch64
+++ b/Dockerfile.aarch64
@@ -82,8 +82,7 @@ RUN \
 	apt-utils \
 	locales && \
  echo "**** install packages ****" && \
- apt-get install --no-install-recommends -y \
-	ca-certificates \
+ apt-get install -y \
 	curl \
 	gnupg \
 	libc6 \
diff --git a/Dockerfile.armhf b/Dockerfile.armhf
index 9b6bd05..5278577 100644
--- a/Dockerfile.armhf
+++ b/Dockerfile.armhf
@@ -82,8 +82,7 @@ RUN \
 	apt-utils \
 	locales && \
  echo "**** install packages ****" && \
- apt-get install --no-install-recommends -y \
-	ca-certificates \
+ apt-get install -y \
 	curl \
 	gnupg \
 	libc6 \