diff --git a/package.json b/package.json
index 2d4a34a..5f6a2b3 100644
--- a/package.json
+++ b/package.json
@@ -58,7 +58,7 @@
     "rollup-plugin-typescript2": "0.21.2",
     "sinon": "7.3.2",
     "standard-version": "6.0.1",
-    "tslint": "^5.18.0",
+    "tslint": "5.18.0",
     "typescript": "3.5.2",
     "yargs": "13.2.4"
   },
diff --git a/yarn.lock b/yarn.lock
index a5e5990..69e65ba 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2848,7 +2848,7 @@ tslib@^1.8.0, tslib@^1.8.1:
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.10.0.tgz#c3c19f95973fb0a62973fb09d90d961ee43e5c8a"
   integrity sha512-qOebF53frne81cf0S9B41ByenJ3/IuH8yJKngAX35CmiZySA0khhkovshKK+jGCaMnVomla7gVlIcc3EvKPbTQ==
 
-tslint@^5.18.0:
+tslint@5.18.0:
   version "5.18.0"
   resolved "https://registry.yarnpkg.com/tslint/-/tslint-5.18.0.tgz#f61a6ddcf372344ac5e41708095bbf043a147ac6"
   integrity sha512-Q3kXkuDEijQ37nXZZLKErssQVnwCV/+23gFEMROi8IlbaBG6tXqLPQJ5Wjcyt/yHPKBC+hD5SzuGaMora+ZS6w==