diff --git a/.config/redis.config.php b/.config/redis.config.php
index a5b13da6..2069812f 100644
--- a/.config/redis.config.php
+++ b/.config/redis.config.php
@@ -14,4 +14,8 @@ if (getenv('REDIS_HOST')) {
   } elseif (getenv('REDIS_HOST')[0] != '/') {
     $CONFIG['redis']['port'] = 6379;
   }
+
+  if (getenv('REDIS_HOST_USER') !== false) {
+    $CONFIG['redis']['user'] = (string) getenv('REDIS_HOST_USER');
+  }
 }
diff --git a/28/apache/config/redis.config.php b/28/apache/config/redis.config.php
index a5b13da6..2069812f 100644
--- a/28/apache/config/redis.config.php
+++ b/28/apache/config/redis.config.php
@@ -14,4 +14,8 @@ if (getenv('REDIS_HOST')) {
   } elseif (getenv('REDIS_HOST')[0] != '/') {
     $CONFIG['redis']['port'] = 6379;
   }
+
+  if (getenv('REDIS_HOST_USER') !== false) {
+    $CONFIG['redis']['user'] = (string) getenv('REDIS_HOST_USER');
+  }
 }
diff --git a/28/fpm-alpine/config/redis.config.php b/28/fpm-alpine/config/redis.config.php
index a5b13da6..2069812f 100644
--- a/28/fpm-alpine/config/redis.config.php
+++ b/28/fpm-alpine/config/redis.config.php
@@ -14,4 +14,8 @@ if (getenv('REDIS_HOST')) {
   } elseif (getenv('REDIS_HOST')[0] != '/') {
     $CONFIG['redis']['port'] = 6379;
   }
+
+  if (getenv('REDIS_HOST_USER') !== false) {
+    $CONFIG['redis']['user'] = (string) getenv('REDIS_HOST_USER');
+  }
 }
diff --git a/28/fpm/config/redis.config.php b/28/fpm/config/redis.config.php
index a5b13da6..2069812f 100644
--- a/28/fpm/config/redis.config.php
+++ b/28/fpm/config/redis.config.php
@@ -14,4 +14,8 @@ if (getenv('REDIS_HOST')) {
   } elseif (getenv('REDIS_HOST')[0] != '/') {
     $CONFIG['redis']['port'] = 6379;
   }
+
+  if (getenv('REDIS_HOST_USER') !== false) {
+    $CONFIG['redis']['user'] = (string) getenv('REDIS_HOST_USER');
+  }
 }
diff --git a/29/apache/config/redis.config.php b/29/apache/config/redis.config.php
index a5b13da6..2069812f 100644
--- a/29/apache/config/redis.config.php
+++ b/29/apache/config/redis.config.php
@@ -14,4 +14,8 @@ if (getenv('REDIS_HOST')) {
   } elseif (getenv('REDIS_HOST')[0] != '/') {
     $CONFIG['redis']['port'] = 6379;
   }
+
+  if (getenv('REDIS_HOST_USER') !== false) {
+    $CONFIG['redis']['user'] = (string) getenv('REDIS_HOST_USER');
+  }
 }
diff --git a/29/fpm-alpine/config/redis.config.php b/29/fpm-alpine/config/redis.config.php
index a5b13da6..2069812f 100644
--- a/29/fpm-alpine/config/redis.config.php
+++ b/29/fpm-alpine/config/redis.config.php
@@ -14,4 +14,8 @@ if (getenv('REDIS_HOST')) {
   } elseif (getenv('REDIS_HOST')[0] != '/') {
     $CONFIG['redis']['port'] = 6379;
   }
+
+  if (getenv('REDIS_HOST_USER') !== false) {
+    $CONFIG['redis']['user'] = (string) getenv('REDIS_HOST_USER');
+  }
 }
diff --git a/29/fpm/config/redis.config.php b/29/fpm/config/redis.config.php
index a5b13da6..2069812f 100644
--- a/29/fpm/config/redis.config.php
+++ b/29/fpm/config/redis.config.php
@@ -14,4 +14,8 @@ if (getenv('REDIS_HOST')) {
   } elseif (getenv('REDIS_HOST')[0] != '/') {
     $CONFIG['redis']['port'] = 6379;
   }
+
+  if (getenv('REDIS_HOST_USER') !== false) {
+    $CONFIG['redis']['user'] = (string) getenv('REDIS_HOST_USER');
+  }
 }
diff --git a/30/apache/config/redis.config.php b/30/apache/config/redis.config.php
index a5b13da6..2069812f 100644
--- a/30/apache/config/redis.config.php
+++ b/30/apache/config/redis.config.php
@@ -14,4 +14,8 @@ if (getenv('REDIS_HOST')) {
   } elseif (getenv('REDIS_HOST')[0] != '/') {
     $CONFIG['redis']['port'] = 6379;
   }
+
+  if (getenv('REDIS_HOST_USER') !== false) {
+    $CONFIG['redis']['user'] = (string) getenv('REDIS_HOST_USER');
+  }
 }
diff --git a/30/fpm-alpine/config/redis.config.php b/30/fpm-alpine/config/redis.config.php
index a5b13da6..2069812f 100644
--- a/30/fpm-alpine/config/redis.config.php
+++ b/30/fpm-alpine/config/redis.config.php
@@ -14,4 +14,8 @@ if (getenv('REDIS_HOST')) {
   } elseif (getenv('REDIS_HOST')[0] != '/') {
     $CONFIG['redis']['port'] = 6379;
   }
+
+  if (getenv('REDIS_HOST_USER') !== false) {
+    $CONFIG['redis']['user'] = (string) getenv('REDIS_HOST_USER');
+  }
 }
diff --git a/30/fpm/config/redis.config.php b/30/fpm/config/redis.config.php
index a5b13da6..2069812f 100644
--- a/30/fpm/config/redis.config.php
+++ b/30/fpm/config/redis.config.php
@@ -14,4 +14,8 @@ if (getenv('REDIS_HOST')) {
   } elseif (getenv('REDIS_HOST')[0] != '/') {
     $CONFIG['redis']['port'] = 6379;
   }
+
+  if (getenv('REDIS_HOST_USER') !== false) {
+    $CONFIG['redis']['user'] = (string) getenv('REDIS_HOST_USER');
+  }
 }
diff --git a/README.md b/README.md
index 6745faa3..6fdd5ec9 100644
--- a/README.md
+++ b/README.md
@@ -236,6 +236,7 @@ To use Redis for memory caching as well as PHP session storage, specify the foll
 
 - `REDIS_HOST` (not set by default) Name of Redis container
 - `REDIS_HOST_PORT` (default: `6379`) Optional port for Redis, only use for external Redis servers that run on non-standard ports.
+- `REDIS_HOST_USER` (not set by default) Optional username for Redis, only use for external Redis servers that require a user.
 - `REDIS_HOST_PASSWORD` (not set by default) Redis password
 
 Check the [Nextcloud documentation](https://docs.nextcloud.com/server/latest/admin_manual/configuration_server/caching_configuration.html) for more information.
diff --git a/generate-stackbrew-library.sh b/generate-stackbrew-library.sh
index f65b49ed..bdee5160 100755
--- a/generate-stackbrew-library.sh
+++ b/generate-stackbrew-library.sh
@@ -70,6 +70,24 @@ latest=$( cat latest.txt )
 versions=( */ )
 versions=( "${versions[@]%/}" )
 for version in "${versions[@]}"; do
+
+	if [ "$version" = "notify_push" ]; then
+		commit="$(dockerfileCommit "$version")"
+		fullversion="$( awk '$1 == "ENV" && $2 == "NOTIFY_PUSH_VERSION" { print $3; exit }' "$version/Dockerfile" )"
+		versionAliases=( "$fullversion" "${fullversion%.*}" "${fullversion%.*.*}" )
+		variantAliases=( "${versionAliases[@]/%/-$version}" $version )
+
+		cat <<-EOE
+
+			Tags: $(join ', ' "${variantAliases[@]}")
+			Architectures: amd64, arm32v7, arm64v8
+			GitCommit: $commit
+			Directory: $version
+		EOE
+
+		continue
+	fi
+
 	variants=( $version/*/ )
 	variants=( $(for variant in "${variants[@]%/}"; do
 		echo "$(basename "$variant")"
diff --git a/notify_push/Dockerfile b/notify_push/Dockerfile
new file mode 100644
index 00000000..56ac7787
--- /dev/null
+++ b/notify_push/Dockerfile
@@ -0,0 +1,27 @@
+FROM alpine:3.13
+
+RUN apk add --no-cache ca-certificates
+
+# https://github.com/nextcloud/notify_push/releases
+ENV NOTIFY_PUSH_VERSION 0.1.6
+
+RUN set -ex; \
+	\
+	apkArch="$(apk --print-arch)"; \
+	npTriplet="unknown-linux-musl"; \
+	case "$apkArch" in \
+		aarch64|x86_64) npArch="$apkArch" ;; \
+		armv7) npArch="$apkArch"; $npTriplet="${npTriplet}-eabihf" ;; \
+		*) echo >&2 "error: unsupported arch: $apkArch"; exit 1 ;; \
+	esac; \
+	\
+	wget -O /usr/local/bin/notify_push "https://github.com/nextcloud/notify_push/releases/download/v${NOTIFY_PUSH_VERSION}/notify_push-$npArch-$npTriplet"; \
+	\
+	chmod +x /usr/local/bin/notify_push; \
+	notify_push --version
+
+USER nobody
+
+EXPOSE 7867
+
+CMD ["notify_push"]
diff --git a/update.sh b/update.sh
index 89f3d6f2..daa6b362 100755
--- a/update.sh
+++ b/update.sh
@@ -71,6 +71,16 @@ imagick_version="$(
 		| tail -1
 )"
 
+notify_push_version="$(
+	git ls-remote --tags https://github.com/nextcloud/notify_push.git \
+		| cut -d/ -f3 \
+		| grep -vE -- '-rc|-b' \
+		| tr -d '^{}' \
+		| sed -E 's/^v//' \
+		| sort -V \
+		| tail -1
+)"
+
 declare -A pecl_versions=(
 	[APCu]="$apcu_version"
 	[memcached]="$memcached_version"
@@ -179,3 +189,6 @@ for version in "${versions[@]}"; do
 		done
 	fi
 done
+
+echo "updating notify_push $notify_push_version"
+sed -re 's/^ENV NOTIFY_PUSH_VERSION .*$/ENV NOTIFY_PUSH_VERSION '"$notify_push_version"'/;' -i "notify_push/Dockerfile"