diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,3 +1,7 @@
+## 0.1.0.7
+
+* Add support for .less files [#534](https://github.com/yesodweb/wai/pull/534)
+
 ## 0.1.0.6
 
 * Add woff2 mime type [#350](https://github.com/yesodweb/wai/pull/350)
diff --git a/Network/Mime.hs b/Network/Mime.hs
--- a/Network/Mime.hs
+++ b/Network/Mime.hs
@@ -468,6 +468,11 @@
     , ("lbd", "application/vnd.llamagraphics.life-balance.desktop")
     , ("lbe", "application/vnd.llamagraphics.life-balance.exchange+xml")
     , ("les", "application/vnd.hhe.lesson-player")
+
+    -- Added after deliberation in PR (https://github.com/yesodweb/wai/pull/534)
+    -- Accepted mainly because of StackOverflow (http://stackoverflow.com/questions/7319555/how-to-add-less-to-iis-7-0)
+    , ("less", "text/css")
+    
     , ("lha", "application/x-lzh-compressed")
     , ("link66", "application/vnd.route66.link66+xml")
     , ("list", "text/plain")
diff --git a/mime-types.cabal b/mime-types.cabal
--- a/mime-types.cabal
+++ b/mime-types.cabal
@@ -1,5 +1,5 @@
 name:                mime-types
-version:             0.1.0.6
+version:             0.1.0.7
 synopsis:            Basic mime-type handling types and functions
 description:         API docs and the README are available at <http://www.stackage.org/package/mime-types>.
 homepage:            https://github.com/yesodweb/wai