diff --git a/package.json b/package.json
index c0e7398..9a34808 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
 		"typescript-tslint-plugin": "^0.3.1"
 	},
 	"dependencies": {
-		"acorn": "^6.1.1",
+		"acorn": "^6.4.1",
 		"acorn-walk": "^6.1.1",
 		"amd-loader": "^0.0.8",
 		"lodash": "^4.17.0",
diff --git a/yarn.lock b/yarn.lock
index bab0f7a..0a4f17b 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -40,9 +40,10 @@ acorn-walk@^6.1.1:
   version "6.1.1"
   resolved "https://registry.yarnpkg.com/acorn-walk/-/acorn-walk-6.1.1.tgz#d363b66f5fac5f018ff9c3a1e7b6f8e310cc3913"
 
-acorn@^6.1.1:
-  version "6.1.1"
-  resolved "https://registry.yarnpkg.com/acorn/-/acorn-6.1.1.tgz#7d25ae05bb8ad1f9b699108e1094ecd7884adc1f"
+acorn@^6.4.1:
+  version "6.4.1"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-6.4.1.tgz#531e58ba3f51b9dacb9a6646ca4debf5b14ca474"
+  integrity sha512-ZVA9k326Nwrj3Cj9jlh3wGFutC2ZornPNARZwsNYqQYgN0EsV2d53w5RN/co65Ohn4sUAUtb1rSUAOD6XN9idA==
 
 amd-loader@^0.0.8:
   version "0.0.8"