diff --git a/ubuntu-debootstrap/README.md b/ubuntu-debootstrap/README.md
index e659182e7..0dfce3dfd 100644
--- a/ubuntu-debootstrap/README.md
+++ b/ubuntu-debootstrap/README.md
@@ -1,10 +1,11 @@
 # Supported tags and respective `Dockerfile` links
 
-- [`10.04.4`, `10.04`, `lucid` (*10.04/Dockerfile*)](https://github.com/tianon/docker-brew-ubuntu-debootstrap/blob/914295f4d57271f13bb4a4f3c02f01320ce139c1/10.04/Dockerfile)
-- [`12.04.5`, `12.04`, `precise` (*12.04/Dockerfile*)](https://github.com/tianon/docker-brew-ubuntu-debootstrap/blob/914295f4d57271f13bb4a4f3c02f01320ce139c1/12.04/Dockerfile)
-- [`14.04.1`, `14.04`, `trusty`, `latest` (*14.04/Dockerfile*)](https://github.com/tianon/docker-brew-ubuntu-debootstrap/blob/914295f4d57271f13bb4a4f3c02f01320ce139c1/14.04/Dockerfile)
-- [`14.10`, `utopic` (*14.10/Dockerfile*)](https://github.com/tianon/docker-brew-ubuntu-debootstrap/blob/914295f4d57271f13bb4a4f3c02f01320ce139c1/14.10/Dockerfile)
-- [`devel` (*devel/Dockerfile*)](https://github.com/tianon/docker-brew-ubuntu-debootstrap/blob/914295f4d57271f13bb4a4f3c02f01320ce139c1/devel/Dockerfile)
+- [`10.04.4`, `10.04`, `lucid` (*10.04/Dockerfile*)](https://github.com/tianon/docker-brew-ubuntu-debootstrap/blob/9b0801aebe6b0d8ba1a9de1ef8e8401989ee74b4/10.04/Dockerfile)
+- [`12.04.5`, `12.04`, `precise` (*12.04/Dockerfile*)](https://github.com/tianon/docker-brew-ubuntu-debootstrap/blob/9b0801aebe6b0d8ba1a9de1ef8e8401989ee74b4/12.04/Dockerfile)
+- [`14.04.1`, `14.04`, `trusty`, `latest` (*14.04/Dockerfile*)](https://github.com/tianon/docker-brew-ubuntu-debootstrap/blob/9b0801aebe6b0d8ba1a9de1ef8e8401989ee74b4/14.04/Dockerfile)
+- [`14.10`, `utopic` (*14.10/Dockerfile*)](https://github.com/tianon/docker-brew-ubuntu-debootstrap/blob/9b0801aebe6b0d8ba1a9de1ef8e8401989ee74b4/14.10/Dockerfile)
+- [`15.04`, `vivid` (*15.04/Dockerfile*)](https://github.com/tianon/docker-brew-ubuntu-debootstrap/blob/9b0801aebe6b0d8ba1a9de1ef8e8401989ee74b4/15.04/Dockerfile)
+- [`devel` (*devel/Dockerfile*)](https://github.com/tianon/docker-brew-ubuntu-debootstrap/blob/9b0801aebe6b0d8ba1a9de1ef8e8401989ee74b4/devel/Dockerfile)
 
 For more information about this image and its history, please see the [relevant
 manifest file
diff --git a/ubuntu/README.md b/ubuntu/README.md
index 0a5ca03ac..09fe4e7c5 100644
--- a/ubuntu/README.md
+++ b/ubuntu/README.md
@@ -1,8 +1,8 @@
 # Supported tags and respective `Dockerfile` links
 
-- [`12.04.5`, `12.04`, `precise` (*precise/Dockerfile*)](https://github.com/tianon/docker-brew-ubuntu-core/blob/85471971670295a9bad93402e18c52e4f3e1502e/precise/Dockerfile)
-- [`14.04.1`, `14.04`, `trusty`, `latest` (*trusty/Dockerfile*)](https://github.com/tianon/docker-brew-ubuntu-core/blob/85471971670295a9bad93402e18c52e4f3e1502e/trusty/Dockerfile)
-- [`14.10`, `utopic` (*utopic/Dockerfile*)](https://github.com/tianon/docker-brew-ubuntu-core/blob/85471971670295a9bad93402e18c52e4f3e1502e/utopic/Dockerfile)
+- [`12.04.5`, `12.04`, `precise` (*precise/Dockerfile*)](https://github.com/tianon/docker-brew-ubuntu-core/blob/b3d5822d7fa42d27cbf32e5fcc0b97b02c007618/precise/Dockerfile)
+- [`14.04.1`, `14.04`, `trusty`, `latest` (*trusty/Dockerfile*)](https://github.com/tianon/docker-brew-ubuntu-core/blob/b3d5822d7fa42d27cbf32e5fcc0b97b02c007618/trusty/Dockerfile)
+- [`15.04`, `vivid` (*vivid/Dockerfile*)](https://github.com/tianon/docker-brew-ubuntu-core/blob/b3d5822d7fa42d27cbf32e5fcc0b97b02c007618/vivid/Dockerfile)
 
 For more information about this image and its history, please see the [relevant
 manifest file