diff --git a/config-bot/Dockerfile b/config-bot/Dockerfile
index 0888d9a..86b544c 100644
--- a/config-bot/Dockerfile
+++ b/config-bot/Dockerfile
@@ -1,4 +1,4 @@
-FROM registry.fedoraproject.org/fedora:39
+FROM registry.fedoraproject.org/fedora:40
 
 RUN dnf -y install git python3-aiohttp && dnf clean all
 
diff --git a/coreos-koji-tagger/Dockerfile b/coreos-koji-tagger/Dockerfile
index 802ea9d..226f15b 100644
--- a/coreos-koji-tagger/Dockerfile
+++ b/coreos-koji-tagger/Dockerfile
@@ -1,4 +1,4 @@
-FROM registry.fedoraproject.org/fedora:39
+FROM registry.fedoraproject.org/fedora:40
 
 # set PYTHONUNBUFFERED env var to non-empty string so that our
 # periods with no newline get printed immediately to the screen
diff --git a/coreos-ostree-importer/Dockerfile b/coreos-ostree-importer/Dockerfile
index a5fbda6..693ba0b 100644
--- a/coreos-ostree-importer/Dockerfile
+++ b/coreos-ostree-importer/Dockerfile
@@ -1,4 +1,4 @@
-FROM registry.fedoraproject.org/fedora:39
+FROM registry.fedoraproject.org/fedora:40
 
 # set PYTHONUNBUFFERED env var to non-empty string so that our
 # output immediately comes to the console
diff --git a/fedora-ostree-pruner/Dockerfile b/fedora-ostree-pruner/Dockerfile
index 223198d..10da2a5 100644
--- a/fedora-ostree-pruner/Dockerfile
+++ b/fedora-ostree-pruner/Dockerfile
@@ -1,4 +1,4 @@
-FROM registry.fedoraproject.org/fedora:38
+FROM registry.fedoraproject.org/fedora:40
 
 # set PYTHONUNBUFFERED env var to non-empty string so that our
 # output immediately comes to the console