diff --git a/images/koolbox/Dockerfile b/images/koolbox/Dockerfile
index 7f0bb992022636142c1806463d20fe520e723222..65897b609d7d6b40c9c299bd7fb34b4debfe3579 100644
--- a/images/koolbox/Dockerfile
+++ b/images/koolbox/Dockerfile
@@ -135,8 +135,6 @@ FROM registry.fedoraproject.org/fedora:36
 ARG MAINTAINER="unmaintained"
 LABEL maintainer=$MAINTAINER
 
-RUN dnf upgrade -y
-
 RUN dnf install -y \
       bash \
       ca-certificates \