diff --git a/9.2/alpine/Dockerfile b/9.2/alpine/Dockerfile
index 0a0748b8ff..fbb6825a98 100644
--- a/9.2/alpine/Dockerfile
+++ b/9.2/alpine/Dockerfile
@@ -98,8 +98,8 @@ RUN set -ex \
 		$runDeps \
 		bash \
 		su-exec \
-# tzdata loading functionality is optional, and fails gracefully
-#		tzdata \
+# tzdata adds around 1Mb to image size, but it is suggested by Django documentation that timezone should be set for performance reasons: http://bit.ly/2fMYhh1
+		tzdata \
 	&& apk del .fetch-deps .build-deps \
 	&& cd / \
 	&& rm -rf \
diff --git a/9.3/alpine/Dockerfile b/9.3/alpine/Dockerfile
index e4a08ac456..fed8b907ee 100644
--- a/9.3/alpine/Dockerfile
+++ b/9.3/alpine/Dockerfile
@@ -98,8 +98,8 @@ RUN set -ex \
 		$runDeps \
 		bash \
 		su-exec \
-# tzdata loading functionality is optional, and fails gracefully
-#		tzdata \
+# tzdata adds around 1Mb to image size, but it is suggested by Django documentation that timezone should be set for performance reasons: http://bit.ly/2fMYhh1
+		tzdata \
 	&& apk del .fetch-deps .build-deps \
 	&& cd / \
 	&& rm -rf \
diff --git a/9.4/alpine/Dockerfile b/9.4/alpine/Dockerfile
index 8192dbfb1d..b74b06efa5 100644
--- a/9.4/alpine/Dockerfile
+++ b/9.4/alpine/Dockerfile
@@ -98,8 +98,8 @@ RUN set -ex \
 		$runDeps \
 		bash \
 		su-exec \
-# tzdata loading functionality is optional, and fails gracefully
-#		tzdata \
+# tzdata adds around 1Mb to image size, but it is suggested by Django documentation that timezone should be set for performance reasons: http://bit.ly/2fMYhh1
+		tzdata \
 	&& apk del .fetch-deps .build-deps \
 	&& cd / \
 	&& rm -rf \
diff --git a/9.5/alpine/Dockerfile b/9.5/alpine/Dockerfile
index f6b88470ff..9920b38a79 100644
--- a/9.5/alpine/Dockerfile
+++ b/9.5/alpine/Dockerfile
@@ -98,8 +98,8 @@ RUN set -ex \
 		$runDeps \
 		bash \
 		su-exec \
-# tzdata loading functionality is optional, and fails gracefully
-#		tzdata \
+# tzdata adds around 1Mb to image size, but it is suggested by Django documentation that timezone should be set for performance reasons: http://bit.ly/2fMYhh1
+		tzdata \
 	&& apk del .fetch-deps .build-deps \
 	&& cd / \
 	&& rm -rf \
diff --git a/9.6/alpine/Dockerfile b/9.6/alpine/Dockerfile
index d7a45299bc..40a14419b8 100644
--- a/9.6/alpine/Dockerfile
+++ b/9.6/alpine/Dockerfile
@@ -98,8 +98,8 @@ RUN set -ex \
 		$runDeps \
 		bash \
 		su-exec \
-# tzdata loading functionality is optional, and fails gracefully
-#		tzdata \
+# tzdata adds around 1Mb to image size, but it is suggested by Django documentation that timezone should be set for performance reasons: http://bit.ly/2fMYhh1
+		tzdata \
 	&& apk del .fetch-deps .build-deps \
 	&& cd / \
 	&& rm -rf \
diff --git a/Dockerfile-alpine.template b/Dockerfile-alpine.template
index c51348bf70..c17b6215d3 100644
--- a/Dockerfile-alpine.template
+++ b/Dockerfile-alpine.template
@@ -98,8 +98,8 @@ RUN set -ex \
 		$runDeps \
 		bash \
 		su-exec \
-# tzdata loading functionality is optional, and fails gracefully
-#		tzdata \
+# tzdata adds around 1Mb to image size, but it is suggested by Django documentation that timezone should be set for performance reasons: http://bit.ly/2fMYhh1
+		tzdata \
 	&& apk del .fetch-deps .build-deps \
 	&& cd / \
 	&& rm -rf \