diff --git a/package.json b/package.json
index 238a3f1..48b21da 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
     "prettier-config-ikatyang": "1.1.1",
     "ts-jest": "21.2.4",
     "ts-node": "4.1.0",
-    "tslint": "5.8.0",
+    "tslint": "5.9.1",
     "tslint-config-ikatyang": "2.5.1",
     "tslint-config-prettier": "1.6.0",
     "tslint-plugin-prettier": "1.3.0",
diff --git a/yarn.lock b/yarn.lock
index 844d9f7..aa375d0 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -495,7 +495,7 @@ chalk@^1.1.3:
     strip-ansi "^3.0.0"
     supports-color "^2.0.0"
 
-chalk@^2.0.1, chalk@^2.1.0, chalk@^2.3.0:
+chalk@^2.0.1, chalk@^2.3.0:
   version "2.3.0"
   resolved "https://registry.yarnpkg.com/chalk/-/chalk-2.3.0.tgz#b5ea48efc9c1793dccc9b4767c93914d3f2d52ba"
   dependencies:
@@ -583,7 +583,7 @@ combined-stream@^1.0.5, combined-stream@~1.0.5:
   dependencies:
     delayed-stream "~1.0.0"
 
-commander@^2.9.0:
+commander@^2.12.1:
   version "2.12.2"
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.12.2.tgz#0f5946c427ed9ec0d91a46bb9def53e54650e555"
 
@@ -2829,7 +2829,7 @@ tsconfig@^7.0.0:
     strip-bom "^3.0.0"
     strip-json-comments "^2.0.0"
 
-tslib@^1.0.0, tslib@^1.7.1, tslib@^1.8.1:
+tslib@^1.0.0, tslib@^1.7.1, tslib@^1.8.0, tslib@^1.8.1:
   version "1.8.1"
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.8.1.tgz#6946af2d1d651a7b1863b531d6e5afa41aa44eac"
 
@@ -2878,20 +2878,21 @@ tslint-plugin-prettier@1.3.0:
     eslint-plugin-prettier "^2.2.0"
     tslib "^1.7.1"
 
-tslint@5.8.0:
-  version "5.8.0"
-  resolved "https://registry.yarnpkg.com/tslint/-/tslint-5.8.0.tgz#1f49ad5b2e77c76c3af4ddcae552ae4e3612eb13"
+tslint@5.9.1:
+  version "5.9.1"
+  resolved "https://registry.yarnpkg.com/tslint/-/tslint-5.9.1.tgz#1255f87a3ff57eb0b0e1f0e610a8b4748046c9ae"
   dependencies:
     babel-code-frame "^6.22.0"
     builtin-modules "^1.1.1"
-    chalk "^2.1.0"
-    commander "^2.9.0"
+    chalk "^2.3.0"
+    commander "^2.12.1"
     diff "^3.2.0"
     glob "^7.1.1"
+    js-yaml "^3.7.0"
     minimatch "^3.0.4"
     resolve "^1.3.2"
     semver "^5.3.0"
-    tslib "^1.7.1"
+    tslib "^1.8.0"
     tsutils "^2.12.1"
 
 tsutils@^1.4.0: