diff --git a/Dockerfile.tools b/Dockerfile.tools
index 10a5bda9..7bebfe05 100644
--- a/Dockerfile.tools
+++ b/Dockerfile.tools
@@ -1,4 +1,4 @@
-FROM nixos/nix
+FROM docker.io/nixos/nix
 
 COPY flake.nix flake.nix
 
diff --git a/Makefile b/Makefile
index 257a1b68..f6cbf526 100644
--- a/Makefile
+++ b/Makefile
@@ -40,7 +40,7 @@ tools:
 		--volume homelab-tools-cache:/root/.cache \
 		--volume homelab-tools-nix:/nix \
 		--workdir $(shell pwd) \
-		nixos/nix nix --experimental-features 'nix-command flakes' develop
+		docker.io/nixos/nix nix --experimental-features 'nix-command flakes' develop
 
 test:
 	make -C test
diff --git a/metal/roles/pxe_server/defaults/main.yml b/metal/roles/pxe_server/defaults/main.yml
index 61fd2092..3dfe5b65 100644
--- a/metal/roles/pxe_server/defaults/main.yml
+++ b/metal/roles/pxe_server/defaults/main.yml
@@ -1,4 +1,4 @@
-iso_url: "https://download.fedoraproject.org/pub/fedora/linux/releases/38/Server/x86_64/iso/Fedora-Server-dvd-x86_64-38-1.6.iso"
-iso_checksum: "sha256:66b52d7cb39386644cd740930b0bef0a5a2f2be569328fef6b1f9b3679fdc54d"
+iso_url: "https://download.fedoraproject.org/pub/fedora/linux/releases/39/Server/x86_64/iso/Fedora-Server-dvd-x86_64-39-1.5.iso"
+iso_checksum: "sha256:2755cdff6ac6365c75be60334bf1935ade838fc18de53d4c640a13d3e904f6e9"
 timezone: Asia/Ho_Chi_Minh
 dhcp_proxy: true