diff --git a/Dockerfile-alpine.template b/Dockerfile-alpine.template
index dffd36ab..43b85308 100644
--- a/Dockerfile-alpine.template
+++ b/Dockerfile-alpine.template
@@ -48,6 +48,7 @@ RUN set -ex; \
         pcntl \
         pdo_mysql \
         pdo_pgsql \
+        sysvsem \
         zip \
     ; \
     \
diff --git a/Dockerfile-debian.template b/Dockerfile-debian.template
index a9de46ce..d3fb81ee 100644
--- a/Dockerfile-debian.template
+++ b/Dockerfile-debian.template
@@ -57,6 +57,7 @@ RUN set -ex; \
         pcntl \
         pdo_mysql \
         pdo_pgsql \
+        sysvsem \
         zip \
     ; \
     \
diff --git a/update.sh b/update.sh
index 57724f90..a8089ff3 100755
--- a/update.sh
+++ b/update.sh
@@ -113,6 +113,15 @@ function create_variant() {
 		s/%%CRONTAB_INT%%/'"$crontabInt"'/g;
 	' "$dir/Dockerfile"
 
+	# Nextcloud 26+ recommends sysvsem
+	case "$version" in
+		24|25 )
+			sed -ri -e '
+				/sysvsem/d
+			' "$dir/Dockerfile"
+			;;
+	esac
+
 	# Copy the shell scripts
 	for name in entrypoint cron; do
 		cp "docker-$name.sh" "$dir/$name.sh"