diff --git a/bigcode-astgen/javascript/package.json b/bigcode-astgen/javascript/package.json
index 1c9214b..3bbc2cb 100644
--- a/bigcode-astgen/javascript/package.json
+++ b/bigcode-astgen/javascript/package.json
@@ -7,7 +7,7 @@
     "bigcode-astgen-js": "./bin/bigcode-astgen-js"
   },
   "dependencies": {
-    "acorn": "^5.1.2",
+    "acorn": "^5.7.4",
     "async": "^2.5.0",
     "glob": "^7.1.2",
     "yargs": "10.0.3"
diff --git a/bigcode-astgen/javascript/yarn.lock b/bigcode-astgen/javascript/yarn.lock
index 1fbbaee..c4a3445 100644
--- a/bigcode-astgen/javascript/yarn.lock
+++ b/bigcode-astgen/javascript/yarn.lock
@@ -12,9 +12,9 @@ acorn@^3.0.4:
   version "3.3.0"
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-3.3.0.tgz#45e37fb39e8da3f25baee3ff5369e2bb5f22017a"
 
-acorn@^5.1.1, acorn@^5.1.2:
-  version "5.1.2"
-  resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.1.2.tgz#911cb53e036807cf0fa778dc5d370fbd864246d7"
+acorn@^5.1.1, acorn@^5.7.4:
+  version "5.7.4"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.7.4.tgz#3e8d8a9947d0599a1796d10225d7432f4a4acf5e"
 
 ajv-keywords@^2.1.0:
   version "2.1.0"