diff --git a/2.4/Dockerfile b/2.4/Dockerfile
index b0f66b8..b02a35f 100644
--- a/2.4/Dockerfile
+++ b/2.4/Dockerfile
@@ -147,6 +147,9 @@ RUN set -eux; \
 # smoke test
 	httpd -v
 
+# https://httpd.apache.org/docs/2.4/stopping.html#gracefulstop
+STOPSIGNAL WINCH
+
 COPY httpd-foreground /usr/local/bin/
 
 EXPOSE 80
diff --git a/2.4/alpine/Dockerfile b/2.4/alpine/Dockerfile
index 33a0d68..b9658da 100644
--- a/2.4/alpine/Dockerfile
+++ b/2.4/alpine/Dockerfile
@@ -146,6 +146,9 @@ RUN set -eux; \
 # smoke test
 	httpd -v
 
+# https://httpd.apache.org/docs/2.4/stopping.html#gracefulstop
+STOPSIGNAL WINCH
+
 COPY httpd-foreground /usr/local/bin/
 
 EXPOSE 80