diff --git a/tests/docker/alpine316/Dockerfile b/tests/docker/alpine316/Dockerfile
index e7bc6bea..03aa0661 100644
--- a/tests/docker/alpine316/Dockerfile
+++ b/tests/docker/alpine316/Dockerfile
@@ -10,6 +10,7 @@ RUN apk --update --no-cache add \
         php8-curl \
         php8-dom \
         php8-gd \
+        php8-gettext \
         php8-iconv \
         php8-intl \
         php8-json \