diff --git a/.changeset/add-dependency-synckit.md b/.changeset/add-dependency-synckit.md
new file mode 100644
index 00000000..4939a785
--- /dev/null
+++ b/.changeset/add-dependency-synckit.md
@@ -0,0 +1,5 @@
+---
+'eslint-plugin-prettier': patch
+---
+
+fix: add missing dependency `synckit`
diff --git a/package.json b/package.json
index af6769f7..8bcd743c 100644
--- a/package.json
+++ b/package.json
@@ -49,7 +49,8 @@
     }
   },
   "dependencies": {
-    "prettier-linter-helpers": "^1.0.0"
+    "prettier-linter-helpers": "^1.0.0",
+    "synckit": "^0.8.5"
   },
   "devDependencies": {
     "@1stg/common-config": "^7.1.1",
diff --git a/yarn.lock b/yarn.lock
index a4b9d242..6615b437 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -9046,13 +9046,13 @@ svg-tags@^1.0.0:
   resolved "https://registry.yarnpkg.com/svg-tags/-/svg-tags-1.0.0.tgz#58f71cee3bd519b59d4b2a843b6c7de64ac04764"
   integrity sha512-ovssysQTa+luh7A5Weu3Rta6FJlFBBbInjOh722LIt6klpU2/HtdUbszju/G4devcvk8PGt7FCLv5wftu3THUA==
 
-synckit@^0.8.0, synckit@^0.8.1, synckit@^0.8.3:
-  version "0.8.4"
-  resolved "https://registry.yarnpkg.com/synckit/-/synckit-0.8.4.tgz#0e6b392b73fafdafcde56692e3352500261d64ec"
-  integrity sha512-Dn2ZkzMdSX827QbowGbU/4yjWuvNaCoScLLoMo/yKbu+P4GBR6cRGKZH27k6a9bRzdqcyd1DE96pQtQ6uNkmyw==
+synckit@^0.8.0, synckit@^0.8.1, synckit@^0.8.3, synckit@^0.8.5:
+  version "0.8.5"
+  resolved "https://registry.yarnpkg.com/synckit/-/synckit-0.8.5.tgz#b7f4358f9bb559437f9f167eb6bc46b3c9818fa3"
+  integrity sha512-L1dapNV6vu2s/4Sputv8xGsCdAVlb5nRDMFU/E27D44l5U6cw1g0dGd45uLc+OXjNMmF4ntiMdCimzcjFKQI8Q==
   dependencies:
     "@pkgr/utils" "^2.3.1"
-    tslib "^2.4.0"
+    tslib "^2.5.0"
 
 tapable@^2.2.0:
   version "2.2.1"
@@ -9175,7 +9175,12 @@ tslib@^1.8.1, tslib@^1.9.3:
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.14.1.tgz#cf2d38bdc34a134bcaf1091c41f6619e2f672d00"
   integrity sha512-Xni35NKzjgMrwevysHTCArtLDpPvye8zV/0E4EyYn43P7/7qvQwPh9BGkHewbMulVntbigmcT7rdX3BNo9wRJg==
 
-tslib@^2.0.0, tslib@^2.1.0, tslib@^2.3.1, tslib@^2.4.0, tslib@~2.4.0:
+tslib@^2.0.0, tslib@^2.1.0, tslib@^2.3.1, tslib@^2.4.0, tslib@^2.5.0:
+  version "2.5.0"
+  resolved "https://registry.yarnpkg.com/tslib/-/tslib-2.5.0.tgz#42bfed86f5787aeb41d031866c8f402429e0fddf"
+  integrity sha512-336iVw3rtn2BUK7ORdIAHTyxHGRIHVReokCR3XjbckJMK7ms8FysBfhLR8IXnAgy7T0PTPNBWKiH514FOW/WSg==
+
+tslib@~2.4.0:
   version "2.4.0"
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-2.4.0.tgz#7cecaa7f073ce680a05847aa77be941098f36dc3"
   integrity sha512-d6xOpEDfsi2CZVlPQzGeux8XMwLT9hssAsaPYExaQMuYskwb+x1x7J371tWlbBdWHroy99KnVB6qIkUbs5X3UQ==