diff --git a/package.json b/package.json
index 2f5d5d0..d3c1c63 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
   "dependencies": {
     "@types/geojson": "7946.0.16",
     "@types/topojson-client": "3.1.5",
-    "chroma-js": "2.6.0",
+    "chroma-js": "3.1.2",
     "lodash": "^4.17.21",
     "lru-cache": "11.2.2",
     "maplibre-gl": "5.3.0",
@@ -48,7 +48,7 @@
     "@babel/preset-typescript": "7.28.5",
     "@eslint/core": "0.17.0",
     "@eslint/js": "9.39.1",
-    "@types/chroma-js": "2.4.5",
+    "@types/chroma-js": "3.1.2",
     "@types/jest": "30.0.0",
     "@types/lodash": "4.17.20",
     "@types/lru-cache": "7.10.10",
diff --git a/yarn.lock b/yarn.lock
index 5c5aded..2510d23 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2318,10 +2318,10 @@
   dependencies:
     "@babel/types" "^7.3.0"
 
-"@types/chroma-js@2.4.5":
-  version "2.4.5"
-  resolved "https://registry.yarnpkg.com/@types/chroma-js/-/chroma-js-2.4.5.tgz#483e08cdb1c400e8a9fb55b9c259caccb3e712f0"
-  integrity sha512-6ISjhzJViaPCy2q2e6PgK+8HcHQDQ0V2LDiKmYAh+jJlLqDa6HbwDh0wOevHY0kHHUx0iZwjSRbVD47WOUx5EQ==
+"@types/chroma-js@3.1.2":
+  version "3.1.2"
+  resolved "https://registry.yarnpkg.com/@types/chroma-js/-/chroma-js-3.1.2.tgz#29dd767ae46124c9d0cd3370bedad7364adcfd10"
+  integrity sha512-YBTQqArPN8A0niHXCwrO1z5x++a+6l0mLBykncUpr23oIPW7L4h39s6gokdK/bDrPmSh8+TjMmrhBPnyiaWPmQ==
 
 "@types/estree@^1.0.6":
   version "1.0.6"
@@ -3006,10 +3006,10 @@ chokidar@^3.6.0:
   optionalDependencies:
     fsevents "~2.3.2"
 
-chroma-js@2.6.0:
-  version "2.6.0"
-  resolved "https://registry.yarnpkg.com/chroma-js/-/chroma-js-2.6.0.tgz#578743dd359698a75067a19fa5571dec54d0b70b"
-  integrity sha512-BLHvCB9s8Z1EV4ethr6xnkl/P2YRFOGqfgvuMG/MyCbZPrTA+NeiByY6XvgF0zP4/2deU2CXnWyMa3zu1LqQ3A==
+chroma-js@3.1.2:
+  version "3.1.2"
+  resolved "https://registry.yarnpkg.com/chroma-js/-/chroma-js-3.1.2.tgz#cfb807045182228574eae5380587cdb830e985d6"
+  integrity sha512-IJnETTalXbsLx1eKEgx19d5L6SRM7cH4vINw/99p/M11HCuXGRWL+6YmCm7FWFGIo6dtWuQoQi1dc5yQ7ESIHg==
 
 ci-info@^4.2.0:
   version "4.2.0"