diff --git a/Containers/apache/healthcheck.sh b/Containers/apache/healthcheck.sh
index b11d8b5b..667c94d3 100644
--- a/Containers/apache/healthcheck.sh
+++ b/Containers/apache/healthcheck.sh
@@ -2,7 +2,7 @@
 
 curl -skfI localhost:8000 || exit 1
 if [ "$APACHE_PORT" != '443' ]; then
-    curl -skfI localhost:"$APACHE_PORT" || exit 1
+    nc -z localhost "$APACHE_PORT" || exit 1
 else
-    curl -skfI https://"$NC_DOMAIN":"$APACHE_PORT" || exit 1
+    nc -z "$NC_DOMAIN" "$APACHE_PORT" || exit 1
 fi
diff --git a/Containers/collabora/Dockerfile b/Containers/collabora/Dockerfile
index 173ec374..0eab5a39 100644
--- a/Containers/collabora/Dockerfile
+++ b/Containers/collabora/Dockerfile
@@ -9,9 +9,10 @@ RUN set -ex; \
     export DEBIAN_FRONTEND=noninteractive; \
     apt-get install -y --no-install-recommends \
         tzdata \
+        netcat \
     ; \
     rm -rf /var/lib/apt/lists/*
 
 USER 104
 
-HEALTHCHECK CMD curl -skfI localhost:9980 || exit 1
+HEALTHCHECK CMD nc -z localhost 9980 || exit 1
diff --git a/Containers/domaincheck/Dockerfile b/Containers/domaincheck/Dockerfile
index ab09e156..57192bcc 100644
--- a/Containers/domaincheck/Dockerfile
+++ b/Containers/domaincheck/Dockerfile
@@ -1,5 +1,5 @@
 FROM alpine:3.16.2
-RUN apk add --update --no-cache lighttpd bash curl
+RUN apk add --update --no-cache lighttpd bash curl netcat-openbsd
 
 RUN adduser -S www-data -G www-data
 RUN rm -rf /etc/lighttpd/lighttpd.conf
@@ -15,4 +15,4 @@ USER www-data
 RUN mkdir -p /var/www/domaincheck/
 ENTRYPOINT ["/start.sh"]
 
-HEALTHCHECK CMD curl -skfI localhost:$APACHE_PORT || exit 1
\ No newline at end of file
+HEALTHCHECK CMD nc -z localhost $APACHE_PORT || exit 1
\ No newline at end of file
diff --git a/Containers/imaginary/Dockerfile b/Containers/imaginary/Dockerfile
index dd9ea352..a3e7c94c 100644
--- a/Containers/imaginary/Dockerfile
+++ b/Containers/imaginary/Dockerfile
@@ -8,8 +8,9 @@ RUN set -ex; \
     apt-get install -y --no-install-recommends \
         ca-certificates \
         curl \
+        netcat \
     ; \
     rm -rf /var/lib/apt/lists/*
 USER nobody
 
-HEALTHCHECK CMD curl -skI 127.0.0.1:9000 || exit 1
\ No newline at end of file
+HEALTHCHECK CMD nc -z localhost 9000 || exit 1
\ No newline at end of file
diff --git a/Containers/nextcloud/Dockerfile b/Containers/nextcloud/Dockerfile
index f536a699..24a3304d 100644
--- a/Containers/nextcloud/Dockerfile
+++ b/Containers/nextcloud/Dockerfile
@@ -252,4 +252,4 @@ RUN echo "root:$(openssl rand -base64 12)" | chpasswd
 USER www-data
 ENTRYPOINT ["/start.sh"]
 
-HEALTHCHECK CMD (nc -z localhost 9000 && curl -skI localhost:7867) || exit 1
\ No newline at end of file
+HEALTHCHECK CMD (nc -z localhost 9000 && nc -z localhost 7867) || exit 1
\ No newline at end of file
diff --git a/Containers/talk/Dockerfile b/Containers/talk/Dockerfile
index 1bbdd768..7e0e9e27 100644
--- a/Containers/talk/Dockerfile
+++ b/Containers/talk/Dockerfile
@@ -69,4 +69,4 @@ USER talk
 ENTRYPOINT ["start.sh"]
 CMD ["/usr/bin/supervisord", "-c", "/supervisord.conf"]
 
-HEALTHCHECK CMD (curl -skI localhost:8081 && curl -skI localhost:8188 && curl -skf --http0.9 localhost:4222 && nc -z localhost $TALK_PORT) || exit 1
\ No newline at end of file
+HEALTHCHECK CMD (nc -z localhost 8081 && nc -z localhost 8188 && nc -z localhost 4222 && nc -z localhost $TALK_PORT) || exit 1
\ No newline at end of file