diff --git a/package-lock.json b/package-lock.json
index 7bd9e5b..968bc43 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,7 +9,7 @@
       "version": "4.2.1",
       "license": "MIT",
       "dependencies": {
-        "@asamuzakjp/css-color": "^2.8.2",
+        "@asamuzakjp/css-color": "^3.0.4",
         "rrweb-cssom": "^0.8.0"
       },
       "devDependencies": {
@@ -30,16 +30,16 @@
       }
     },
     "node_modules/@asamuzakjp/css-color": {
-      "version": "2.8.2",
-      "resolved": "https://registry.npmjs.org/@asamuzakjp/css-color/-/css-color-2.8.2.tgz",
-      "integrity": "sha512-RtWv9jFN2/bLExuZgFFZ0I3pWWeezAHGgrmjqGGWclATl1aDe3yhCUaI0Ilkp6OCk9zX7+FjvDasEX8Q9Rxc5w==",
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/@asamuzakjp/css-color/-/css-color-3.0.4.tgz",
+      "integrity": "sha512-JvJJWj+qfjCf4zoYLoNANTm7ZnYlUS9pltsS377qjW3o0ry/FrbgOvSW+VGNfyOvD95uldikfsi3oem2vc6tsQ==",
       "license": "MIT",
       "dependencies": {
         "@csstools/css-calc": "^2.1.1",
         "@csstools/css-color-parser": "^3.0.7",
         "@csstools/css-parser-algorithms": "^3.0.4",
         "@csstools/css-tokenizer": "^3.0.3",
-        "lru-cache": "^11.0.2"
+        "lru-cache": "^10.4.3"
       }
     },
     "node_modules/@babel/code-frame": {
@@ -2219,13 +2219,10 @@
       "license": "MIT"
     },
     "node_modules/lru-cache": {
-      "version": "11.0.2",
-      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-11.0.2.tgz",
-      "integrity": "sha512-123qHRfJBmo2jXDbo/a5YOQrJoHF/GNQTLzQ5+IdK5pWpceK17yRc6ozlWd25FxvGKQbIUs91fDFkXmDHTKcyA==",
-      "license": "ISC",
-      "engines": {
-        "node": "20 || >=22"
-      }
+      "version": "10.4.3",
+      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-10.4.3.tgz",
+      "integrity": "sha512-JNAzZcXrCt42VGLuYz0zfAzDfAvJWW6AfYlDBQyDV5DClI2m5sAmK+OIO7s59XfsRsWHp02jAJrRadPRGTt6SQ==",
+      "license": "ISC"
     },
     "node_modules/math-intrinsics": {
       "version": "1.1.0",
diff --git a/package.json b/package.json
index d39a093..4ee8d0f 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
   ],
   "main": "./lib/CSSStyleDeclaration.js",
   "dependencies": {
-    "@asamuzakjp/css-color": "^2.8.2",
+    "@asamuzakjp/css-color": "^3.0.4",
     "rrweb-cssom": "^0.8.0"
   },
   "devDependencies": {