diff --git a/package.json b/package.json
index c065189..802ed3a 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
     "prh"
   ],
   "dependencies": {
-    "prh": "^5.4.3",
+    "prh": "^5.4.4",
     "textlint-rule-helper": "^2.1.1",
     "untildify": "^3.0.3"
   },
diff --git a/yarn.lock b/yarn.lock
index 7adbc9b..1065d7e 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1464,7 +1464,7 @@ detect-libc@^1.0.2:
   resolved "https://registry.yarnpkg.com/detect-libc/-/detect-libc-1.0.3.tgz#fa137c4bd698edf55cd5cd02ac559f91a4c4ba9b"
   integrity sha1-+hN8S9aY7fVc1c0CrFWfkaTEups=
 
-diff@3.5.0, diff@^3.3.0:
+diff@3.5.0:
   version "3.5.0"
   resolved "https://registry.yarnpkg.com/diff/-/diff-3.5.0.tgz#800c0dd1e0a8bfbc95835c202ad220fe317e5a12"
   integrity sha512-A46qtFgd+g7pDZinpnwiRJtxbC1hpgf0uzP3iG89scHk0AUC7A1TGxf5OiiOUv/JMZR8GOt8hL900hV0bOy5xA==
@@ -3203,13 +3203,13 @@ prettier@1.15.3:
   resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.15.3.tgz#1feaac5bdd181237b54dbe65d874e02a1472786a"
   integrity sha512-gAU9AGAPMaKb3NNSUUuhhFAS7SCO4ALTN4nRIn6PJ075Qd28Yn2Ig2ahEJWdJwJmlEBTUfC7mMUSFy8MwsOCfg==
 
-prh@^5.4.3:
-  version "5.4.3"
-  resolved "https://registry.yarnpkg.com/prh/-/prh-5.4.3.tgz#d3864a6de2f35c6603e33c700106dce01c22876d"
-  integrity sha512-W5+gzqOrVLKayPh+2QCur7KYZPsLRfDJd4Tyz5lIXAWwqaX/LQ40FX/P3/Hbfgf7w+EQPdR1yOx6BVf+frG40w==
+prh@^5.4.4:
+  version "5.4.4"
+  resolved "https://registry.yarnpkg.com/prh/-/prh-5.4.4.tgz#5b618213a187f3580f262f4e0f79e8e8561ea179"
+  integrity sha512-UATF+R/2H8owxwPvF12Knihu9aYGTuZttGHrEEq5NBWz38mREh23+WvCVKX3fhnIZIMV7ye6E1fnqAl+V6WYEw==
   dependencies:
     commandpost "^1.2.1"
-    diff "^3.3.0"
+    diff "^4.0.1"
     js-yaml "^3.9.1"
 
 private@^0.1.6: