diff --git a/calf-io/build.gradle.kts b/calf-io/build.gradle.kts
index a8d233e..bea46de 100644
--- a/calf-io/build.gradle.kts
+++ b/calf-io/build.gradle.kts
@@ -11,4 +11,8 @@ kotlin {
     sourceSets.androidMain.dependencies {
         implementation(libs.documentfile)
     }
+
+    sourceSets.wasmJsMain.dependencies {
+        implementation(libs.kotlinx.browser)
+    }
 }
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index c65e7ab..39bba66 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -3,6 +3,7 @@ agp = "8.7.3"
 kotlin = "2.1.0"
 compose = "1.7.3"
 kotlinx-datetime = "0.6.1"
+kotlinx-browser = "0.3"
 nexus-publish = "2.0.0"
 documentfile = "1.0.1"
 jna = "5.16.0"
@@ -51,6 +52,9 @@ documentfile = { module = "androidx.documentfile:documentfile", version.ref = "d
 # Desktop
 jna = { module = "net.java.dev.jna:jna", version.ref = "jna" }
 
+# Wasm
+kotlinx-browser = { module = "org.jetbrains.kotlinx:kotlinx-browser", version.ref = "kotlinx-browser" }
+
 # For sample
 navigation-compose = { module = "androidx.navigation:navigation-compose", version.ref = "navigation-compose" }
 compose-navigation = { module = "org.jetbrains.androidx.navigation:navigation-compose", version.ref = "compose-navigation" }