diff --git a/lib/build.gradle.kts b/lib/build.gradle.kts
index 38f86db..239101a 100644
--- a/lib/build.gradle.kts
+++ b/lib/build.gradle.kts
@@ -35,6 +35,7 @@ kotlin {
                 implementation(compose.material)
                 @OptIn(ExperimentalComposeLibrary::class)
                 implementation(compose.components.resources)
+                implementation("org.jetbrains.kotlinx:kotlinx-collections-immutable:0.3.5")
             }
         }
         val androidMain by getting {
diff --git a/lib/src/commonMain/kotlin/StackedSnakbarHostState.kt b/lib/src/commonMain/kotlin/StackedSnakbarHostState.kt
index 881fcbd..069c9a5 100644
--- a/lib/src/commonMain/kotlin/StackedSnakbarHostState.kt
+++ b/lib/src/commonMain/kotlin/StackedSnakbarHostState.kt
@@ -12,6 +12,7 @@ import androidx.compose.ui.Modifier
 import internal.StackedSnackbar
 import internal.StackedSnackbarData
 import internal.Type
+import kotlinx.collections.immutable.toImmutableList
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.flow.MutableStateFlow
@@ -41,7 +42,7 @@ fun StackedSnackbarHost(
     }
     if (hostState.currentSnackbarData.isNotEmpty()) {
         StackedSnackbar(
-            snackbarData = hostState.currentSnackbarData,
+            snackbarData = hostState.currentSnackbarData.toImmutableList(),
             onSnackbarRemoved = {
                 hostState.newSnackbarHosted.value = false
                 coroutineScope.launch {
diff --git a/lib/src/commonMain/kotlin/internal/StackedSnackbar.kt b/lib/src/commonMain/kotlin/internal/StackedSnackbar.kt
index 58cdf64..c79b347 100644
--- a/lib/src/commonMain/kotlin/internal/StackedSnackbar.kt
+++ b/lib/src/commonMain/kotlin/internal/StackedSnackbar.kt
@@ -48,6 +48,7 @@ import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.unit.Dp
 import androidx.compose.ui.unit.IntOffset
 import androidx.compose.ui.unit.dp
+import kotlinx.collections.immutable.ImmutableList
 import org.jetbrains.compose.resources.ExperimentalResourceApi
 import org.jetbrains.compose.resources.painterResource
 import kotlin.math.abs
@@ -56,7 +57,7 @@ import kotlin.math.roundToInt
 
 @Composable
 internal fun StackedSnackbar(
-    snackbarData: List<StackedSnackbarData>,
+    snackbarData: ImmutableList<StackedSnackbarData>,
     maxStack: Int,
     animation: StackedSnackbarAnimation,
     onSnackbarRemoved: () -> Unit,