diff --git a/source/_layouts/default.html.twig b/source/_layouts/default.twig
similarity index 100%
rename from source/_layouts/default.html.twig
rename to source/_layouts/default.twig
diff --git a/source/_layouts/post.html.twig b/source/_layouts/post.twig
similarity index 98%
rename from source/_layouts/post.html.twig
rename to source/_layouts/post.twig
index e9a399ed..dca666f9 100644
--- a/source/_layouts/post.html.twig
+++ b/source/_layouts/post.twig
@@ -1,4 +1,4 @@
- {% extends 'default.html.twig' %}
+{% extends 'default.twig' %}
 
 {% block body_classes 'page--blog page--blog__post' %}
 
diff --git a/source/_layouts/talk.html.twig b/source/_layouts/talk.twig
similarity index 95%
rename from source/_layouts/talk.html.twig
rename to source/_layouts/talk.twig
index 1b8d3bf6..5eeb957f 100644
--- a/source/_layouts/talk.html.twig
+++ b/source/_layouts/talk.twig
@@ -1,4 +1,4 @@
-{% extends "default.html.twig" %}
+{% extends "default.twig" %}
 
 {% block body_classes 'page--talks page--talks__talk' %}
 
diff --git a/source/_partials/availability.html.twig b/source/_partials/availability.twig
similarity index 100%
rename from source/_partials/availability.html.twig
rename to source/_partials/availability.twig
diff --git a/source/_partials/meetups.html.twig b/source/_partials/meetups.twig
similarity index 100%
rename from source/_partials/meetups.html.twig
rename to source/_partials/meetups.twig
diff --git a/source/_partials/og.html.twig b/source/_partials/og.twig
similarity index 100%
rename from source/_partials/og.html.twig
rename to source/_partials/og.twig
diff --git a/source/_partials/post_header.html.twig b/source/_partials/post_header.twig
similarity index 100%
rename from source/_partials/post_header.html.twig
rename to source/_partials/post_header.twig
diff --git a/source/_partials/speakerdeck.html.twig b/source/_partials/speakerdeck.twig
similarity index 100%
rename from source/_partials/speakerdeck.html.twig
rename to source/_partials/speakerdeck.twig
diff --git a/source/_partials/talk_listing_item.html.twig b/source/_partials/talk_listing_item.twig
similarity index 100%
rename from source/_partials/talk_listing_item.html.twig
rename to source/_partials/talk_listing_item.twig
diff --git a/source/_partials/title.html.twig b/source/_partials/title.twig
similarity index 100%
rename from source/_partials/title.html.twig
rename to source/_partials/title.twig
diff --git a/source/_partials/tweet.html.twig b/source/_partials/tweet.twig
similarity index 100%
rename from source/_partials/tweet.html.twig
rename to source/_partials/tweet.twig