diff --git a/package.json b/package.json
index b225e316d..3cc06302e 100644
--- a/package.json
+++ b/package.json
@@ -79,7 +79,7 @@
     "ethereum-bridge": "^0.6.1",
     "ethereumjs-abi": "^0.6.5",
     "fs": "0.0.2",
-    "ganache-cli": "^6.3.0",
+    "ganache-cli": "6.1.8",
     "mocha-junit-reporter": "^1.18.0",
     "openzeppelin-solidity": "2.1.2",
     "prettier": "^1.15.3",
@@ -97,7 +97,8 @@
     "ignore": [
       "openzeppelin-solidity",
       "web3",
-      "truffle-hdwallet-provider"
+      "truffle-hdwallet-provider",
+      "ganache-cli"
     ]
   }
 }
diff --git a/test/o_security_token.js b/test/o_security_token.js
index 2d0808112..069dcf3fe 100644
--- a/test/o_security_token.js
+++ b/test/o_security_token.js
@@ -1332,7 +1332,7 @@ contract("SecurityToken", async (accounts) => {
             `)
 
             assert.equal(
-                (await stGetter.controller.call()).substring(0, 3),
+                (await stGetter.controller.call()).substring(0, 4),
                 await readStorage(I_SecurityToken.address, 7)
             );
 
diff --git a/yarn.lock b/yarn.lock
index 1591bc5ba..91971f5ee 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1146,7 +1146,7 @@ bn.js@4.11.6:
   resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-4.11.6.tgz#53344adb14617a13f6e8dd2ce28905d1c0ba3215"
   integrity sha1-UzRK2xRhehP26N0s4okF0cC6MhU=
 
-bn.js@4.11.8, bn.js@=4.11.8, bn.js@^4.0.0, bn.js@^4.1.0, bn.js@^4.1.1, bn.js@^4.10.0, bn.js@^4.11.0, bn.js@^4.11.1, bn.js@^4.11.3, bn.js@^4.11.6, bn.js@^4.11.8, bn.js@^4.4.0, bn.js@^4.8.0:
+bn.js@=4.11.8, bn.js@^4.0.0, bn.js@^4.1.0, bn.js@^4.1.1, bn.js@^4.10.0, bn.js@^4.11.0, bn.js@^4.11.1, bn.js@^4.11.3, bn.js@^4.11.6, bn.js@^4.11.8, bn.js@^4.4.0, bn.js@^4.8.0:
   version "4.11.8"
   resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-4.11.8.tgz#2cde09eb5ee341f484746bb0309b3253b1b1442f"
   integrity sha512-ItfYfPLkWHUjckQCk8xC+LwxgK8NYcXywGigJgSwOP8Y2iyWT4f2vsZnoOXTTbo+o5yXmIUJ4gn5538SO5S3gA==
@@ -3306,14 +3306,12 @@ 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@^6.3.0:
-  version "6.3.0"
-  resolved "https://registry.yarnpkg.com/ganache-cli/-/ganache-cli-6.3.0.tgz#574f9d35aaec8da6e01c2be49db8fe73129eb561"
-  integrity sha512-8SyzfX2ipRVBx1fBZLg3j8I3E334U3Vazk5mEpYcWqnIjC2ace6jtOXHG4aTuAvSz3+HzQ8p8pRjOJxdDZ2pnQ==
+ganache-cli@6.1.8:
+  version "6.1.8"
+  resolved "https://registry.yarnpkg.com/ganache-cli/-/ganache-cli-6.1.8.tgz#49a8a331683a9652183f82ef1378d17e1814fcd3"
+  integrity sha512-yXzteu4SIgUL31mnpm9j+x6dpHUw0p/nsRVkcySKq0w+1vDxH9jMErP1QhZAJuTVE6ni4nfvGSNkaQx5cD3jfg==
   dependencies:
-    bn.js "4.11.8"
-    source-map-support "0.5.9"
-    yargs "11.1.0"
+    source-map-support "^0.5.3"
 
 gauge@~2.7.3:
   version "2.7.4"
@@ -6501,14 +6499,6 @@ source-map-resolve@^0.5.0:
     source-map-url "^0.4.0"
     urix "^0.1.0"
 
-source-map-support@0.5.9:
-  version "0.5.9"
-  resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.9.tgz#41bc953b2534267ea2d605bccfa7bfa3111ced5f"
-  integrity sha512-gR6Rw4MvUlYy83vP0vxoVNzM6t8MUXqNuRsuBmBHQDu1Fh6X015FrLdgoDKcNdkwGubozq0P4N0Q37UyFVr1EA==
-  dependencies:
-    buffer-from "^1.0.0"
-    source-map "^0.6.0"
-
 source-map-support@^0.4.15:
   version "0.4.18"
   resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.4.18.tgz#0286a6de8be42641338594e97ccea75f0a2c585f"
@@ -7848,10 +7838,10 @@ yargs-parser@^9.0.2:
   dependencies:
     camelcase "^4.1.0"
 
-yargs@11.1.0, yargs@^11.0.0:
-  version "11.1.0"
-  resolved "https://registry.yarnpkg.com/yargs/-/yargs-11.1.0.tgz#90b869934ed6e871115ea2ff58b03f4724ed2d77"
-  integrity sha512-NwW69J42EsCSanF8kyn5upxvjp5ds+t3+udGBeTbFnERA+lF541DDpMawzo4z6W/QrzNM18D+BPMiOBibnFV5A==
+yargs@^10.0.3:
+  version "10.1.2"
+  resolved "https://registry.yarnpkg.com/yargs/-/yargs-10.1.2.tgz#454d074c2b16a51a43e2fb7807e4f9de69ccb5c5"
+  integrity sha512-ivSoxqBGYOqQVruxD35+EyCFDYNEFL/Uo6FcOnz+9xZdZzK0Zzw4r4KhbrME1Oo2gOggwJod2MnsdamSG7H9ig==
   dependencies:
     cliui "^4.0.0"
     decamelize "^1.1.1"
@@ -7864,12 +7854,12 @@ yargs@11.1.0, yargs@^11.0.0:
     string-width "^2.0.0"
     which-module "^2.0.0"
     y18n "^3.2.1"
-    yargs-parser "^9.0.2"
+    yargs-parser "^8.1.0"
 
-yargs@^10.0.3:
-  version "10.1.2"
-  resolved "https://registry.yarnpkg.com/yargs/-/yargs-10.1.2.tgz#454d074c2b16a51a43e2fb7807e4f9de69ccb5c5"
-  integrity sha512-ivSoxqBGYOqQVruxD35+EyCFDYNEFL/Uo6FcOnz+9xZdZzK0Zzw4r4KhbrME1Oo2gOggwJod2MnsdamSG7H9ig==
+yargs@^11.0.0:
+  version "11.1.0"
+  resolved "https://registry.yarnpkg.com/yargs/-/yargs-11.1.0.tgz#90b869934ed6e871115ea2ff58b03f4724ed2d77"
+  integrity sha512-NwW69J42EsCSanF8kyn5upxvjp5ds+t3+udGBeTbFnERA+lF541DDpMawzo4z6W/QrzNM18D+BPMiOBibnFV5A==
   dependencies:
     cliui "^4.0.0"
     decamelize "^1.1.1"
@@ -7882,7 +7872,7 @@ yargs@^10.0.3:
     string-width "^2.0.0"
     which-module "^2.0.0"
     y18n "^3.2.1"
-    yargs-parser "^8.1.0"
+    yargs-parser "^9.0.2"
 
 yargs@^4.6.0, yargs@^4.7.1:
   version "4.8.1"