diff --git a/package.json b/package.json
index 5b2ca69..0dd47ac 100644
--- a/package.json
+++ b/package.json
@@ -66,7 +66,7 @@
     "@types/mocha": "5.2.7",
     "@types/node": "12.7.4",
     "@types/sinon": "7.0.13",
-    "prettier": "1.18.2",
+    "prettier": "1.19.1",
     "sinon": "7.4.2",
     "tslint": "5.19.0",
     "tslint-config-prettier": "1.18.0",
diff --git a/yarn.lock b/yarn.lock
index 9dda413..0a551cc 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -650,10 +650,10 @@ performance-now@^2.1.0:
   resolved "https://registry.yarnpkg.com/performance-now/-/performance-now-2.1.0.tgz#6309f4e0e5fa913ec1c69307ae364b4b377c9e7b"
   integrity sha1-Ywn04OX6kT7BxpMHrjZLSzd8nns=
 
-prettier@1.18.2:
-  version "1.18.2"
-  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.18.2.tgz#6823e7c5900017b4bd3acf46fe9ac4b4d7bda9ea"
-  integrity sha512-OeHeMc0JhFE9idD4ZdtNibzY0+TPHSpSSb9h8FqtP+YnoZZ1sl8Vc9b1sasjfymH3SonAF4QcA2+mzHPhMvIiw==
+prettier@1.19.1:
+  version "1.19.1"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.19.1.tgz#f7d7f5ff8a9cd872a7be4ca142095956a60797cb"
+  integrity sha512-s7PoyDv/II1ObgQunCbB9PdLmUcBZcnWOcxDh7O0N/UwDEsHyqkW+Qh28jW+mVuCdx7gLB0BotYI1Y6uI9iyew==
 
 psl@^1.1.24:
   version "1.1.31"