diff --git a/package-lock.json b/package-lock.json
index 210cf6c4..f7a1867e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,7 +9,7 @@
       "version": "9.4.2",
       "license": "MIT",
       "dependencies": {
-        "@rdlabo/ionic-theme-utils": "0.1.4"
+        "@rdlabo/ionic-theme-utils": "0.1.5"
       },
       "devDependencies": {
         "@ionic/angular": "^9.0.0",
@@ -2227,9 +2227,9 @@
       }
     },
     "node_modules/@rdlabo/ionic-theme-utils": {
-      "version": "0.1.4",
-      "resolved": "https://registry.npmjs.org/@rdlabo/ionic-theme-utils/-/ionic-theme-utils-0.1.4.tgz",
-      "integrity": "sha512-FreQRFIdEHpwNuW54R0WEeSZCKnmETIvwm8ZO5UP6rGIzXFmAKkuCyIiy0L6yhrL3Ec1OaxTmIFfhuNwPGqiIw==",
+      "version": "0.1.5",
+      "resolved": "https://registry.npmjs.org/@rdlabo/ionic-theme-utils/-/ionic-theme-utils-0.1.5.tgz",
+      "integrity": "sha512-LTf+GQ3S786xF1R6ITs9PtfDfSZxPcWJqzIzk046X9dvwgS+9+cCmdA5ENXYbo2Xbdv4KnxS/LKvm4fPL9THGQ==",
       "license": "MIT",
       "bin": {
         "rdlabo-build-theme": "scripts/build-theme.mjs",
@@ -2238,6 +2238,11 @@
       },
       "peerDependencies": {
         "@ionic/core": ">=8.8.1 <10"
+      },
+      "peerDependenciesMeta": {
+        "@ionic/core": {
+          "optional": true
+        }
       }
     },
     "node_modules/@rolldown/binding-android-arm-eabi": {
diff --git a/package.json b/package.json
index baa57b62..1298ae49 100644
--- a/package.json
+++ b/package.json
@@ -50,7 +50,7 @@
   },
   "homepage": "https://docs.rdlabo.dev/projects/ionic-theme-ios26",
   "dependencies": {
-    "@rdlabo/ionic-theme-utils": "0.1.4"
+    "@rdlabo/ionic-theme-utils": "0.1.5"
   },
   "devDependencies": {
     "@ionic/angular": "^9.0.0",