diff --git a/.build.yml b/.build.yml
index 985ea9a..5168f17 100644
--- a/.build.yml
+++ b/.build.yml
@@ -22,3 +22,7 @@ tasks:
       cd redstrate.com
       echo "StrictHostKeyChecking=no" >> ~/.ssh/config
       rsync -e 'ssh -p 38901' -Wvr public/ deploy@ryne.moe:/srv/http/retro.redstrate.com
+  - htmltest: |
+      cd redstrate.com
+      curl https://htmltest.wjdp.uk | bash
+      bin/htmltest -c .htmltest.yml public
diff --git a/.htmltest.yml b/.htmltest.yml
new file mode 100644
index 0000000..008fadd
--- /dev/null
+++ b/.htmltest.yml
@@ -0,0 +1,3 @@
+IgnoreDirectoryMissingTrailingSlash: true
+IgnoreAltMissing: true
+IgnoreExternalBrokenLinks: true