diff --git a/5.0/apache/Dockerfile b/5.0/apache/Dockerfile
index 393adb5..52287f5 100644
--- a/5.0/apache/Dockerfile
+++ b/5.0/apache/Dockerfile
@@ -5,7 +5,7 @@ LABEL maintainer="markus@martialblog.de"
 RUN set -ex; \
         apt-get update; \
         apt-get install -y --no-install-recommends \
-                netcat \
+                netcat-openbsd \
         ; \
         \
         apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \
diff --git a/5.0/fpm/Dockerfile b/5.0/fpm/Dockerfile
index 9f43c7a..7d5ee94 100644
--- a/5.0/fpm/Dockerfile
+++ b/5.0/fpm/Dockerfile
@@ -5,7 +5,7 @@ LABEL maintainer="markus@martialblog.de"
 RUN set -ex; \
         apt-get update; \
         apt-get install -y --no-install-recommends \
-                netcat \
+                netcat-openbsd \
         ; \
         \
         apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \
diff --git a/6.0/apache/Dockerfile b/6.0/apache/Dockerfile
index 947a59e..8a10cef 100644
--- a/6.0/apache/Dockerfile
+++ b/6.0/apache/Dockerfile
@@ -5,7 +5,7 @@ LABEL maintainer="markus@martialblog.de"
 RUN set -ex; \
         apt-get update; \
         apt-get install -y --no-install-recommends \
-                netcat \
+                netcat-openbsd \
         ; \
         \
         apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \
diff --git a/6.0/fpm/Dockerfile b/6.0/fpm/Dockerfile
index acc1095..c52c294 100644
--- a/6.0/fpm/Dockerfile
+++ b/6.0/fpm/Dockerfile
@@ -5,7 +5,7 @@ LABEL maintainer="markus@martialblog.de"
 RUN set -ex; \
         apt-get update; \
         apt-get install -y --no-install-recommends \
-                netcat \
+                netcat-openbsd \
         ; \
         \
         apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \