diff --git a/rockylinux9/Dockerfile b/rockylinux9/Dockerfile
index 2cdee5c..1412cdb 100644
--- a/rockylinux9/Dockerfile
+++ b/rockylinux9/Dockerfile
@@ -18,6 +18,7 @@ RUN dnf install --assumeyes --enablerepo=crb \
         patch \
         perl-core \
         pkgconf-pkg-config \
+        rpm-build \
         tar \
         xz \
         epel-release \