diff --git a/package-lock.json b/package-lock.json
index e17dfbf8..c7ee4d7c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1486,7 +1486,6 @@
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       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "dateformat": "~4.6.2",
         "eventemitter2": "~0.4.13",
@@ -2207,11 +2206,10 @@
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     },
     "node_modules/immutable": {
-      "version": "5.1.4",
-      "resolved": "https://registry.npmjs.org/immutable/-/immutable-5.1.4.tgz",
-      "integrity": "sha512-p6u1bG3YSnINT5RQmx/yRZBpenIl30kVxkTLDyHLIMk0gict704Q9n+thfDI7lTRm9vXdDYutVzXhzcThxTnXA==",
-      "dev": true,
-      "license": "MIT"
+      "version": "5.1.5",
+      "resolved": "https://registry.npmjs.org/immutable/-/immutable-5.1.5.tgz",
+      "integrity": "sha512-t7xcm2siw+hlUM68I+UEOK+z84RzmN59as9DZ7P1l0994DKUWV7UXBMQZVxaoMSRQ+PBZbHCOoBt7a2wxOMt+A==",
+      "dev": true
     },
     "node_modules/inflight": {
       "version": "1.0.6",
@@ -4506,7 +4504,6 @@
       "resolved": "https://registry.npmjs.org/grunt/-/grunt-1.6.1.tgz",
       "integrity": "sha512-/ABUy3gYWu5iBmrUSRBP97JLpQUm0GgVveDCp6t3yRNIoltIYw7rEj3g5y1o2PGPR2vfTRGa7WC/LZHLTXnEzA==",
       "dev": true,
-      "peer": true,
       "requires": {
         "dateformat": "~4.6.2",
         "eventemitter2": "~0.4.13",
@@ -5030,9 +5027,9 @@
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     "immutable": {
-      "version": "5.1.4",
-      "resolved": "https://registry.npmjs.org/immutable/-/immutable-5.1.4.tgz",
-      "integrity": "sha512-p6u1bG3YSnINT5RQmx/yRZBpenIl30kVxkTLDyHLIMk0gict704Q9n+thfDI7lTRm9vXdDYutVzXhzcThxTnXA==",
+      "version": "5.1.5",
+      "resolved": "https://registry.npmjs.org/immutable/-/immutable-5.1.5.tgz",
+      "integrity": "sha512-t7xcm2siw+hlUM68I+UEOK+z84RzmN59as9DZ7P1l0994DKUWV7UXBMQZVxaoMSRQ+PBZbHCOoBt7a2wxOMt+A==",
       "dev": true
     },
     "inflight": {