diff --git a/src/nixpacks/images.rs b/src/nixpacks/images.rs
index 607b85d7b..e841f525e 100644
--- a/src/nixpacks/images.rs
+++ b/src/nixpacks/images.rs
@@ -1,5 +1,5 @@
-pub const DEBIAN_BASE_IMAGE: &str = "ghcr.io/railwayapp/nixpacks:debian-1745885067";
-pub const UBUNTU_BASE_IMAGE: &str = "ghcr.io/railwayapp/nixpacks:ubuntu-1745885067";
+pub const DEBIAN_BASE_IMAGE: &str = "ghcr.io/railwayapp/nixpacks:debian-${STEPS_DATE_OUTPUTS_DATE}";
+pub const UBUNTU_BASE_IMAGE: &str = "ghcr.io/railwayapp/nixpacks:ubuntu-${STEPS_DATE_OUTPUTS_DATE}";
 pub const DEFAULT_BASE_IMAGE: &str = UBUNTU_BASE_IMAGE;
 
 pub const STANDALONE_IMAGE: &str = "ubuntu:noble";