diff --git a/composer.json b/composer.json
index c3532092e3..0466236515 100644
--- a/composer.json
+++ b/composer.json
@@ -24,7 +24,7 @@
 		"pear-pear.horde.org/horde_text_flowed": "^2.0.3@stable",
 		"pear-pear.horde.org/horde_util": "^2.5.8@stable",
 		"pear-pear.horde.org/horde_smtp": "^1.9.5@stable",
-		"cerdic/css-tidy": "v1.6.4",
+		"cerdic/css-tidy": "v1.6.5",
 		"ezyang/htmlpurifier": "4.10.0",
 		"kwi/urllinker": "dev-default",
 		"gravatarphp/gravatar": "^1.0",
diff --git a/composer.lock b/composer.lock
index da38b0d443..dea1903ae8 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "0f49672fdd108af1d2f1a5a1627f3f51",
+    "content-hash": "0f9c5df3eabcaa907283b5c89cdd7f1e",
     "packages": [
         {
             "name": "arthurhoaro/favicon",
@@ -58,16 +58,16 @@
         },
         {
             "name": "cerdic/css-tidy",
-            "version": "v1.6.4",
+            "version": "v1.6.5",
             "source": {
                 "type": "git",
                 "url": "https://github.com/Cerdic/CSSTidy.git",
-                "reference": "ba7eae1ea2adeaf21e0e892ba3fc67dfb913f85d"
+                "reference": "32cecbbc7e847c66a45450c92d80c4779ccca484"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/Cerdic/CSSTidy/zipball/ba7eae1ea2adeaf21e0e892ba3fc67dfb913f85d",
-                "reference": "ba7eae1ea2adeaf21e0e892ba3fc67dfb913f85d",
+                "url": "https://api.github.com/repos/Cerdic/CSSTidy/zipball/32cecbbc7e847c66a45450c92d80c4779ccca484",
+                "reference": "32cecbbc7e847c66a45450c92d80c4779ccca484",
                 "shasum": ""
             },
             "require-dev": {
@@ -93,7 +93,7 @@
                 }
             ],
             "description": "CSSTidy is a CSS minifier",
-            "time": "2018-09-29T12:26:47+00:00"
+            "time": "2018-12-18T21:54:05+00:00"
         },
         {
             "name": "ezyang/htmlpurifier",
@@ -239,7 +239,7 @@
             ],
             "description": "Autolink URLs in text or html",
             "homepage": "http://www.kwi.dk/projects/php/UrlLinker/",
-            "time": "2014-12-28T22:05:00+00:00"
+            "time": "2014-12-28T23:05:00+00:00"
         },
         {
             "name": "pear-pear.horde.org/Horde_Crypt_Blowfish",
@@ -2391,7 +2391,7 @@
                 },
                 {
                     "name": "Gert de Pagter",
-                    "email": "BackEndTea@gmail.com"
+                    "email": "backendtea@gmail.com"
                 }
             ],
             "description": "Symfony polyfill for ctype functions",