diff --git a/yarn.lock b/yarn.lock
index 1747d95..ca73270 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1206,9 +1206,9 @@ acorn-walk@^6.0.1:
   integrity sha512-7evsyfH1cLOCdAzZAd43Cic04yKydNx0cF+7tiA19p1XnLLPU4dpCQOqpjqwokFe//vS0QqfqqjCS2JkiIs0cA==
 
 acorn@^5.5.3:
-  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==
 
 acorn@^6.0.1, acorn@^6.0.7, acorn@^6.2.1:
   version "6.3.0"
@@ -1391,8 +1391,9 @@ async-eventemitter@^0.2.2:
   dependencies:
     async "^2.4.0"
 
-"async-eventemitter@github:ahultgren/async-eventemitter#fa06e39e56786ba541c180061dbf2c0a5bbf951c":
+async-eventemitter@ahultgren/async-eventemitter#fa06e39e56786ba541c180061dbf2c0a5bbf951c:
   version "0.2.3"
+  uid fa06e39e56786ba541c180061dbf2c0a5bbf951c
   resolved "https://codeload.github.com/ahultgren/async-eventemitter/tar.gz/fa06e39e56786ba541c180061dbf2c0a5bbf951c"
   dependencies:
     async "^2.4.0"
@@ -4111,8 +4112,9 @@ functional-red-black-tree@^1.0.1:
   resolved "https://registry.yarnpkg.com/functional-red-black-tree/-/functional-red-black-tree-1.0.1.tgz#1b0ab3bd553b2a0d6399d29c0e3ea0b252078327"
   integrity sha1-GwqzvVU7Kg1jmdKcDj6gslIHgyc=
 
-"ganache-cli@github:makerdao/ganache-cli#fix/gas-est-crash":
+ganache-cli@makerdao/ganache-cli#fix/gas-est-crash:
   version "6.4.3-beta.0"
+  uid "3e512b61da2479042627e6155231dcb038110650"
   resolved "https://codeload.github.com/makerdao/ganache-cli/tar.gz/3e512b61da2479042627e6155231dcb038110650"
   dependencies:
     bn.js "4.11.8"