diff --git a/npm-shrinkwrap.json b/npm-shrinkwrap.json
index 8ed28816..53cf342a 100644
--- a/npm-shrinkwrap.json
+++ b/npm-shrinkwrap.json
@@ -90,7 +90,7 @@
             },
             "mime-types": {
               "version": "2.1.10",
-              "from": "mime-types@>=2.1.10 <2.2.0",
+              "from": "mime-types@>=2.1.2 <2.2.0",
               "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.10.tgz",
               "dependencies": {
                 "mime-db": {
@@ -111,7 +111,7 @@
       "dependencies": {
         "async": {
           "version": "1.5.2",
-          "from": "async@>=1.0.0 <2.0.0",
+          "from": "async@>=1.5.2 <2.0.0",
           "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz"
         },
         "request": {
@@ -1291,9 +1291,9 @@
       "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.6.0.tgz"
     },
     "windshaft": {
-      "version": "1.17.1",
-      "from": "windshaft@1.17.1",
-      "resolved": "https://registry.npmjs.org/windshaft/-/windshaft-1.17.1.tgz",
+      "version": "1.17.2",
+      "from": "windshaft@1.17.2",
+      "resolved": "https://registry.npmjs.org/windshaft/-/windshaft-1.17.2.tgz",
       "dependencies": {
         "abaculus": {
           "version": "1.1.0-cdb4",
@@ -1341,11 +1341,6 @@
             }
           }
         },
-        "es6-promise": {
-          "version": "3.1.2",
-          "from": "es6-promise@>=3.1.2 <4.0.0",
-          "resolved": "https://registry.npmjs.org/es6-promise/-/es6-promise-3.1.2.tgz"
-        },
         "grainstore": {
           "version": "1.1.1",
           "from": "grainstore@1.1.1",
@@ -4169,47 +4164,6 @@
             }
           }
         },
-        "postcss": {
-          "version": "5.0.19",
-          "from": "postcss@>=5.0.18 <6.0.0",
-          "resolved": "https://registry.npmjs.org/postcss/-/postcss-5.0.19.tgz",
-          "dependencies": {
-            "supports-color": {
-              "version": "3.1.2",
-              "from": "supports-color@>=3.1.2 <4.0.0",
-              "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-3.1.2.tgz",
-              "dependencies": {
-                "has-flag": {
-                  "version": "1.0.0",
-                  "from": "has-flag@>=1.0.0 <2.0.0",
-                  "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-1.0.0.tgz"
-                }
-              }
-            },
-            "source-map": {
-              "version": "0.5.5",
-              "from": "source-map@>=0.5.1 <0.6.0",
-              "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.5.5.tgz"
-            },
-            "js-base64": {
-              "version": "2.1.9",
-              "from": "js-base64@>=2.1.9 <3.0.0",
-              "resolved": "https://registry.npmjs.org/js-base64/-/js-base64-2.1.9.tgz"
-            }
-          }
-        },
-        "postcss-each": {
-          "version": "0.9.1",
-          "from": "postcss-each@>=0.9.1 <0.10.0",
-          "resolved": "https://registry.npmjs.org/postcss-each/-/postcss-each-0.9.1.tgz",
-          "dependencies": {
-            "postcss-simple-vars": {
-              "version": "1.2.0",
-              "from": "postcss-simple-vars@>=1.2.0 <2.0.0",
-              "resolved": "https://registry.npmjs.org/postcss-simple-vars/-/postcss-simple-vars-1.2.0.tgz"
-            }
-          }
-        },
         "semver": {
           "version": "5.0.3",
           "from": "semver@>=5.0.3 <5.1.0",
diff --git a/package.json b/package.json
index b1d9879f..9d3d8c86 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
         "node-statsd": "~0.0.7",
         "underscore"  : "~1.6.0",
         "dot": "~1.0.2",
-        "windshaft": "1.17.1",
+        "windshaft": "1.17.2",
         "step": "~0.0.6",
         "queue-async": "~1.0.7",
         "request": "~2.62.0",