diff --git a/package.json b/package.json
index a792473..8bf3a20 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
     "open-sans-fontface": "~1.4.0"
   },
   "devDependencies": {
-    "grunt-contrib-compress": "~1.4.1",
+    "grunt-contrib-compress": "~1.5.0",
     "grunt-contrib-csslint": "~2.0.0",
     "grunt-contrib-watch": "~1.0.0",
     "grunt-fixpack": "~0.1.0",
diff --git a/yarn.lock b/yarn.lock
index 0f68ccc..c0fec72 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -770,10 +770,10 @@ grunt-cli@~1.2.0:
     nopt "~3.0.6"
     resolve "~1.1.0"
 
-grunt-contrib-compress@~1.4.1:
-  version "1.4.3"
-  resolved "https://registry.yarnpkg.com/grunt-contrib-compress/-/grunt-contrib-compress-1.4.3.tgz#01ceffb9c637f52e7081f463750983d0a3b0fa73"
-  integrity sha1-Ac7/ucY39S5wgfRjdQmD0KOw+nM=
+grunt-contrib-compress@~1.5.0:
+  version "1.5.0"
+  resolved "https://registry.yarnpkg.com/grunt-contrib-compress/-/grunt-contrib-compress-1.5.0.tgz#ba5f80e22acf192897ce43cb60250cab2cb1f09b"
+  integrity sha512-RcCyetnvTJ7jvnDCSm05wOndAd00HWZTHeVGDVVmCM+K/PEivL0yx8vKyi8uzy0492l2dJgtzR0Ucid7roKg6A==
   dependencies:
     archiver "^1.3.0"
     chalk "^1.1.1"
@@ -781,7 +781,7 @@ grunt-contrib-compress@~1.4.1:
     pretty-bytes "^4.0.2"
     stream-buffers "^2.1.0"
   optionalDependencies:
-    iltorb "^1.0.13"
+    iltorb "^1.3.10"
 
 grunt-contrib-csslint@~2.0.0:
   version "2.0.0"
@@ -1026,7 +1026,7 @@ ieee754@^1.1.4:
   resolved "https://registry.yarnpkg.com/ieee754/-/ieee754-1.1.13.tgz#ec168558e95aa181fd87d37f55c32bbcb6708b84"
   integrity sha512-4vf7I2LYV/HaWerSo3XmlMkp5eZ83i+/CDluXi/IGTs/O1sejBNhTtnxzmRZfvOUqj7lZjqHkeTvpgSFDlWZTg==
 
-iltorb@^1.0.13:
+iltorb@^1.3.10:
   version "1.3.10"
   resolved "https://registry.yarnpkg.com/iltorb/-/iltorb-1.3.10.tgz#a0d9e4e7d52bf510741442236cbe0cc4230fc9f8"
   integrity sha512-nyB4+ru1u8CQqQ6w7YjasboKN3NQTN8GH/V/eEssNRKhW6UbdxdWhB9fJ5EEdjJfezKY0qPrcwLyIcgjL8hHxA==