diff --git a/ontime-back/Dockerfile b/ontime-back/Dockerfile
index 3900282..e997a4a 100644
--- a/ontime-back/Dockerfile
+++ b/ontime-back/Dockerfile
@@ -1,6 +1,5 @@
 FROM openjdk:17
-RUN apt-get update && \
-    apt-get install -y tzdata && \
+RUN microdnf install -y tzdata && \
     ln -snf /usr/share/zoneinfo/Asia/Seoul /etc/localtime && \
     echo "Asia/Seoul" > /etc/timezone
 WORKDIR /app