diff --git a/apache/Dockerfile b/apache/Dockerfile
index 29580e2..5c76e1f 100644
--- a/apache/Dockerfile
+++ b/apache/Dockerfile
@@ -17,7 +17,7 @@ RUN set -ex; \
         libpq-dev \
         netcat \
         \
-        && apt-get autoclean; apt-get autoremove; \
+        && apt-get -y autoclean; apt-get -y autoremove; \
         rm -rf /var/lib/apt/lists/*
 
 # Link LDAP library for PHP ldap extension
diff --git a/fpm/Dockerfile b/fpm/Dockerfile
index 95cae0e..8b04f58 100644
--- a/fpm/Dockerfile
+++ b/fpm/Dockerfile
@@ -17,7 +17,7 @@ RUN set -ex; \
         libpq-dev \
         netcat \
         \
-        && apt-get autoclean; apt-get autoremove; \
+        && apt-get -y autoclean; apt-get -y autoremove; \
         rm -rf /var/lib/apt/lists/*
 
 # Link LDAP library for PHP ldap extension