diff --git a/package.json b/package.json
index db1a1d42..7513b456 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
   },
   "dependencies": {
     "draft-js": "^0.10.1",
-    "immutable": "3.x.x"
+    "immutable": "4.3.8"
   },
   "devDependencies": {
     "babel-cli": "^6.10.1",
diff --git a/yarn.lock b/yarn.lock
index ea13b608..e57c7480 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2151,9 +2151,10 @@ ignore@^3.2.7, ignore@^3.3.3:
   version "3.3.5"
   resolved "https://registry.yarnpkg.com/ignore/-/ignore-3.3.5.tgz#c4e715455f6073a8d7e5dae72d2fc9d71663dba6"
 
-immutable@3.x.x:
-  version "3.8.1"
-  resolved "https://registry.yarnpkg.com/immutable/-/immutable-3.8.1.tgz#200807f11ab0f72710ea485542de088075f68cd2"
+immutable@4.3.8:
+  version "4.3.8"
+  resolved "https://registry.yarnpkg.com/immutable/-/immutable-4.3.8.tgz#02d183c7727fb2bb1d5d0380da0d779dce9296a7"
+  integrity sha512-d/Ld9aLbKpNwyl0KiM2CT1WYvkitQ1TSvmRtkcV8FKStiDoA7Slzgjmb/1G2yhKM1p0XeNOieaTbFZmU1d3Xuw==
 
 immutable@~3.7.4:
   version "3.7.6"