diff --git a/yarn.lock b/yarn.lock
index 0da86a70..becca768 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -967,9 +967,9 @@ acorn-jsx@^4.1.1:
     acorn "^5.0.3"
 
 acorn@^5.0.0, acorn@^5.0.3, acorn@^5.2.1, acorn@^5.6.0, acorn@^5.6.2:
-  version "5.7.3"
-  resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.7.3.tgz#67aa231bf8812974b85235a96771eb6bd07ea279"
-  integrity sha512-T/zvzYRfbVojPWahDsE5evJdHb3oJoQfFbsrKM7w5Zcs++Tr257tia3BmMP8XYVjp1S9RZXQMh7gao96BlqZOw==
+  version "5.7.4"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.7.4.tgz#3e8d8a9947d0599a1796d10225d7432f4a4acf5e"
+  integrity sha512-1D++VG7BhrtvQpNbBzovKNc1FLGGEE/oGe7b9xJm/RFHMBeUaUGpluV9RLjZa47YFdPcDAenEYuq9pQPcMdLJg==
 
 adm-zip@~0.4.3:
   version "0.4.11"