diff --git a/opensearch-master/Dockerfile b/opensearch-master/Dockerfile
index 0cd7373..11a1d58 100644
--- a/opensearch-master/Dockerfile
+++ b/opensearch-master/Dockerfile
@@ -1,11 +1,10 @@
 ARG BASE_IMAGE=opensearchproject/opensearch:latest
 FROM ${BASE_IMAGE}
 
-# Install dependencies for configuration (Ubuntu uses apt)
-RUN apt-get update -y && \
-    apt-get install -y gettext-base jq && \
-    apt-get clean && \
-    rm -rf /var/lib/apt/lists/*
+# Install dependencies for configuration (Amazon Linux 2023 uses dnf)
+RUN dnf update -y && \
+    dnf install -y gettext jq && \
+    dnf clean all
 
 # Copy configuration files and scripts
 COPY rootfs/ /