diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 655d27661..d70004b93 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -308,12 +308,12 @@ tasks {
         kotlinOptions.freeCompilerArgs += listOf(
             "-Xopt-in=kotlin.Experimental",
             "-Xopt-in=kotlin.RequiresOptIn",
-            "-Xuse-experimental=kotlin.ExperimentalStdlibApi",
-            "-Xuse-experimental=kotlinx.coroutines.FlowPreview",
-            "-Xuse-experimental=kotlinx.coroutines.ExperimentalCoroutinesApi",
-            "-Xuse-experimental=kotlinx.coroutines.InternalCoroutinesApi",
-            "-Xuse-experimental=kotlinx.serialization.ExperimentalSerializationApi",
-            "-Xuse-experimental=coil.annotation.ExperimentalCoilApi",
+            "-Xopt-in=kotlin.ExperimentalStdlibApi",
+            "-Xopt-in=kotlinx.coroutines.FlowPreview",
+            "-Xopt-in=kotlinx.coroutines.ExperimentalCoroutinesApi",
+            "-Xopt-in=kotlinx.coroutines.InternalCoroutinesApi",
+            "-Xopt-in=kotlinx.serialization.ExperimentalSerializationApi",
+            "-Xopt-in=coil.annotation.ExperimentalCoilApi",
         )
     }
 
diff --git a/app/src/main/java/eu/kanade/tachiyomi/data/track/bangumi/BangumiApi.kt b/app/src/main/java/eu/kanade/tachiyomi/data/track/bangumi/BangumiApi.kt
index 05db4bd6f..bbf26622e 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/data/track/bangumi/BangumiApi.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/data/track/bangumi/BangumiApi.kt
@@ -26,6 +26,7 @@ import okhttp3.OkHttpClient
 import okhttp3.Request
 import uy.kohesive.injekt.injectLazy
 import java.net.URLEncoder
+import java.nio.charset.StandardCharsets
 
 class BangumiApi(private val client: OkHttpClient, interceptor: BangumiInterceptor) {
 
@@ -109,7 +110,7 @@ class BangumiApi(private val client: OkHttpClient, interceptor: BangumiIntercept
 
     suspend fun search(search: String): List<TrackSearch> {
         return withIOContext {
-            val url = "$apiUrl/search/subject/${URLEncoder.encode(search, Charsets.UTF_8.name())}"
+            val url = "$apiUrl/search/subject/${URLEncoder.encode(search, StandardCharsets.UTF_8.name())}"
                 .toUri()
                 .buildUpon()
                 .appendQueryParameter("max_results", "20")
@@ -133,7 +134,7 @@ class BangumiApi(private val client: OkHttpClient, interceptor: BangumiIntercept
 
     suspend fun searchAnime(search: String): List<AnimeTrackSearch> {
         return withIOContext {
-            val url = "$apiUrl/search/subject/${URLEncoder.encode(search, Charsets.UTF_8.name())}"
+            val url = "$apiUrl/search/subject/${URLEncoder.encode(search, StandardCharsets.UTF_8.name())}"
                 .toUri()
                 .buildUpon()
                 .appendQueryParameter("max_results", "20")
diff --git a/app/src/main/java/eu/kanade/tachiyomi/data/track/kitsu/KitsuApi.kt b/app/src/main/java/eu/kanade/tachiyomi/data/track/kitsu/KitsuApi.kt
index d801d48a1..1c6956672 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/data/track/kitsu/KitsuApi.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/data/track/kitsu/KitsuApi.kt
@@ -26,6 +26,8 @@ import okhttp3.OkHttpClient
 import okhttp3.Request
 import okhttp3.RequestBody
 import okhttp3.RequestBody.Companion.toRequestBody
+import java.net.URLEncoder
+import java.nio.charset.StandardCharsets
 
 class KitsuApi(private val client: OkHttpClient, interceptor: KitsuInterceptor) {
 
@@ -220,7 +222,7 @@ class KitsuApi(private val client: OkHttpClient, interceptor: KitsuInterceptor)
     private suspend fun algoliaSearch(key: String, query: String): List<TrackSearch> {
         return withIOContext {
             val jsonObject = buildJsonObject {
-                put("params", "query=$query$algoliaFilter")
+                put("params", "query=${URLEncoder.encode(query, StandardCharsets.UTF_8.name())}$algoliaFilter")
             }
 
             client.newCall(
@@ -249,7 +251,7 @@ class KitsuApi(private val client: OkHttpClient, interceptor: KitsuInterceptor)
     private suspend fun algoliaSearchAnime(key: String, query: String): List<AnimeTrackSearch> {
         return withIOContext {
             val jsonObject = buildJsonObject {
-                put("params", "query=$query$algoliaFilterAnime")
+                put("params", "query=${URLEncoder.encode(query, StandardCharsets.UTF_8.name())}$algoliaFilterAnime")
             }
 
             client.newCall(
diff --git a/app/src/main/java/eu/kanade/tachiyomi/util/lang/StringExtensions.kt b/app/src/main/java/eu/kanade/tachiyomi/util/lang/StringExtensions.kt
index ab8c1c933..d03cb92ca 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/util/lang/StringExtensions.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/util/lang/StringExtensions.kt
@@ -1,6 +1,7 @@
 package eu.kanade.tachiyomi.util.lang
 
 import net.greypanther.natsort.CaseInsensitiveSimpleNaturalComparator
+import java.nio.charset.StandardCharsets
 import kotlin.math.floor
 
 /**
@@ -41,7 +42,7 @@ fun String.compareToCaseInsensitiveNaturalOrder(other: String): Int {
  * Returns the size of the string as the number of bytes.
  */
 fun String.byteSize(): Int {
-    return toByteArray(Charsets.UTF_8).size
+    return toByteArray(StandardCharsets.UTF_8).size
 }
 
 /**
@@ -49,7 +50,7 @@ fun String.byteSize(): Int {
  * string is shorter.
  */
 fun String.takeBytes(n: Int): String {
-    val bytes = toByteArray(Charsets.UTF_8)
+    val bytes = toByteArray(StandardCharsets.UTF_8)
     return if (bytes.size <= n) {
         this
     } else {