diff --git a/package.json b/package.json
index 99c516c..64169c3 100644
--- a/package.json
+++ b/package.json
@@ -23,6 +23,6 @@
     "rescript": "10.1.4"
   },
   "dependencies": {
-    "@ctrl/tinycolor": "3.3.1"
+    "@ctrl/tinycolor": "4.2.0"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index 135c6e8..9439dc7 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -350,10 +350,10 @@
     exec-sh "^0.3.2"
     minimist "^1.2.0"
 
-"@ctrl/tinycolor@3.3.1":
-  version "3.3.1"
-  resolved "https://registry.yarnpkg.com/@ctrl/tinycolor/-/tinycolor-3.3.1.tgz#fa0efcf813daa43f8a6aef3ddaa80f7e66f1278e"
-  integrity sha512-jUJrjU62MUgHDSu5JfONfgRM2V7GfN5KknsygfIbxwRZXGeayIzxk4O9GiYgEAr9DG5HJThTF5+a5x3wtrOKzQ==
+"@ctrl/tinycolor@4.2.0":
+  version "4.2.0"
+  resolved "https://registry.yarnpkg.com/@ctrl/tinycolor/-/tinycolor-4.2.0.tgz#ba5d0b917303c0b3d3c14c4865cdc6ded25ac05f"
+  integrity sha512-kzyuwOAQnXJNLS9PSyrk0CWk35nWJW/zl/6KvnTBMFK65gm7U1/Z5BqjxeapjZCIhQcM/DsrEmcbRwDyXyXK4A==
 
 "@glennsl/bs-jest@0.7.0":
   version "0.7.0"