diff --git a/dev_scripts/env.py b/dev_scripts/env.py
index e8a2a67a6..ff3476ee5 100755
--- a/dev_scripts/env.py
+++ b/dev_scripts/env.py
@@ -59,8 +59,8 @@
 DISTROS = ["debian", "fedora", "ubuntu"]
 CONTAINER_RUNTIMES = ["podman", "docker"]
 IMAGES_REGISTRY = "ghcr.io/freedomofpress/"
-IMAGE_NAME_BUILD_DEV_FMT = "v2/dangerzone/build-dev/{distro}-{version}-{date}:{hash}"
-IMAGE_NAME_BUILD_ENDUSER_FMT = "v2/dangerzone/end-user/{distro}-{version}-{date}:{hash}"
+IMAGE_NAME_BUILD_DEV_FMT = "v2/dangerzone/build-dev/{distro}-{version}:{date}-{hash}"
+IMAGE_NAME_BUILD_ENDUSER_FMT = "v2/dangerzone/end-user/{distro}-{version}:{date}-{hash}"
 
 EPILOG = """\
 Examples: