diff --git a/.ci/dockerfiles/fed-build/Dockerfile b/.ci/dockerfiles/fed-build/Dockerfile
index 584e2376d..00de57cfb 100644
--- a/.ci/dockerfiles/fed-build/Dockerfile
+++ b/.ci/dockerfiles/fed-build/Dockerfile
@@ -1,3 +1,2 @@
-# mock on Fedora 40 seems broken, so stick with 39 for now
-FROM fedora:39
+FROM fedora:latest
 RUN dnf -y --enablerepo='updates-testing' install mock git rpm-build rpmdevtools && dnf clean all