diff --git a/Dockerfile b/Dockerfile
index 869d4b4..56a3d54 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -28,7 +28,11 @@ WORKDIR /app
 COPY --from=build /app /app
 COPY --from=build /usr/local/bundle /usr/local/bundle
 COPY --from=build /app/vendor/bundle /app/vendor/bundle
-RUN apk --no-cache add --virtual postgresql-dev postgresql-client tzdata bash
+RUN apk --no-cache add --virtual runtime-dependencies \
+  postgresql-dev \
+  postgresql-client \
+  tzdata \
+  bash
 ENV RAILS_ENV=production
 
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