diff --git a/Dockerfile b/Dockerfile
index b4dd011..b7b241f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -16,20 +16,21 @@ COPY scripts/docksal-preinit /scripts/docksal-preinit
 
 RUN set -xe; \
 	apt-get update && \
-	apt-get -y install sudo; \
+	apt-get -y install sudo net-tools; \
 	echo "solr ALL=(ALL) NOPASSWD: ALL" >/etc/sudoers.d/solr; \
 	rm -rf /var/lib/apt/lists/*
 
 RUN set -xe; \
 	ln -s /opt/solr/dist /opt/dist; \
 	ln -s /opt/solr/contrib /opt/contrib; \
-	if [[ "$VERSION" =~ "9" ]]; then \
+	MAJOR_VERSION=$(echo "${VERSION}" | cut -d. -f1); \
+	if [ "${MAJOR_VERSION}" = "9" ]; then \
 			# Needed for 9.x and above
 			sed -i '/exec "$@"/i . docksal-preinit' /opt/solr/docker/scripts/docker-entrypoint.sh; \
 			mv /scripts/healthcheck.sh /scripts/docksal-preinit /opt/solr/docker/scripts/; \
 			chown -R solr:solr /opt/solr/docker /opt/solr/server/solr; \
 	fi; \
-	if [[ "$VERSION" =~ "8" ]]; then \
+	if [ "${MAJOR_VERSION}" = "8" ]; then \
 			# Needed for 8.x and below
 			sed -i '/exec "$@"/i . docksal-preinit' /opt/docker-solr/scripts/docker-entrypoint.sh; \
 			mv /scripts/healthcheck.sh /scripts/docksal-preinit /opt/docker-solr/scripts/; \
diff --git a/Makefile b/Makefile
index 3f8082b..389c602 100644
--- a/Makefile
+++ b/Makefile
@@ -7,8 +7,8 @@ DOCKER ?= docker
 # See https://docs.docker.com/buildx/working-with-buildx/
 DOCKER_BUILDKIT=1
 
-VERSION ?= 8.1.1
-FROM ?= solr:8.1.1-slim
+VERSION ?= 8.11.3
+FROM ?= solr:8.11.3-slim
 TAG ?= $(VERSION)
 
 IMAGE ?= docksal/solr
diff --git a/scripts/healthcheck.sh b/scripts/healthcheck.sh
index 95fe81e..49a39b9 100755
--- a/scripts/healthcheck.sh
+++ b/scripts/healthcheck.sh
@@ -1,5 +1,5 @@
 #!/usr/bin/env sh
 
-[[ "$(netstat -an | grep LISTEN | grep -E '0.0.0.0:8983.*LISTEN')" == "" ]] && exit 1
+[[ "$(netstat -ant | grep LISTEN | grep -E '*:8983.*LISTEN')" == "" ]] && exit 1
 
 exit 0