diff --git a/CHANGELOG.md b/CHANGELOG.md
index c0f92b5e..7e570f5d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,8 @@ _See also: [the official libGDX changelog](https://github.com/libgdx/libgdx/blob
 
 #### 1.10.0-SNAPSHOT
 
+- **[UPDATE]** Updated to Kotlin 1.6.21.
+- **[UPDATE]** Updated to Kotlin Coroutines 1.6.1.
 - **[FEATURE]** (`ktx-ashley`) Added utilities for working with Ashley's `EntityListener` interface:
   - `EntityAdditionListener`: an interface extending `EntityListener` that only requires implementation of the  `entityAdded` method.
   - `EntityRemovalListener`: an interface extending `EntityListener` that only requires implementation of the `entityRemoved` method.
diff --git a/README.md b/README.md
index 0654ddcd..50d8f41c 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 [![GitHub Build](https://github.com/libktx/ktx/workflows/build/badge.svg)](https://github.com/libktx/ktx/actions?query=workflow%3Abuild)
-[![Kotlin](https://img.shields.io/badge/kotlin-1.6.10-orange.svg)](http://kotlinlang.org/)
+[![Kotlin](https://img.shields.io/badge/kotlin-1.6.21-orange.svg)](http://kotlinlang.org/)
 [![libGDX](https://img.shields.io/badge/libgdx-1.10.0-red.svg)](https://libgdx.com/)
 [![Maven Central](https://img.shields.io/maven-central/v/io.github.libktx/ktx-async.svg)](https://search.maven.org/#search%7Cga%7C1%7Cg%3A%22io.github.libktx%22)
 
diff --git a/assets-async/src/main/kotlin/ktx/assets/async/storage.kt b/assets-async/src/main/kotlin/ktx/assets/async/storage.kt
index bea6b34c..1d66c456 100644
--- a/assets-async/src/main/kotlin/ktx/assets/async/storage.kt
+++ b/assets-async/src/main/kotlin/ktx/assets/async/storage.kt
@@ -279,6 +279,7 @@ class AssetStorage(
    *
    * See also [get] and [getAsync].
    */
+  @OptIn(ExperimentalCoroutinesApi::class)
   fun <T> getOrNull(identifier: Identifier<T>): T? {
     val asset = assets[identifier]
     @Suppress("UNCHECKED_CAST", "EXPERIMENTAL_API_USAGE") // Avoids runBlocking call.
diff --git a/async/README.md b/async/README.md
index 511ccd41..fd3bc37d 100644
--- a/async/README.md
+++ b/async/README.md
@@ -1,4 +1,4 @@
-[![Kotlin Coroutines](https://img.shields.io/badge/kotlin--coroutines-1.6.0-orange.svg)](http://kotlinlang.org/)
+[![Kotlin Coroutines](https://img.shields.io/badge/kotlin--coroutines-1.6.1-orange.svg)](http://kotlinlang.org/)
 [![Maven Central](https://img.shields.io/maven-central/v/io.github.libktx/ktx-async.svg)](https://search.maven.org/artifact/io.github.libktx/ktx-async)
 
 # KTX: Coroutines support and parallelization utilities
diff --git a/async/src/main/kotlin/ktx/async/http.kt b/async/src/main/kotlin/ktx/async/http.kt
index 14f5d772..d1446c5d 100644
--- a/async/src/main/kotlin/ktx/async/http.kt
+++ b/async/src/main/kotlin/ktx/async/http.kt
@@ -96,7 +96,7 @@ class HttpRequestResult(
   override fun toString() = "HttpRequestResult(url=$url, method=$method, status=$statusCode)"
   override fun equals(other: Any?) = when (other) {
     null -> false
-    other === this -> true
+    (other === this) -> true
     is HttpRequestResult ->
       url == other.url &&
         method == other.method &&
diff --git a/build.gradle.kts b/build.gradle.kts
index 9819fee1..a4a0c3cf 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -83,7 +83,7 @@ subprojects {
   tasks.withType<KotlinCompile> {
     kotlinOptions {
       jvmTarget = "1.8"
-      freeCompilerArgs += "-Xopt-in=kotlin.RequiresOptIn"
+      freeCompilerArgs += "-opt-in=kotlin.RequiresOptIn"
     }
   }
 
diff --git a/buildSrc/src/main/kotlin/ktx/Versions.kt b/buildSrc/src/main/kotlin/ktx/Versions.kt
index a237c453..ad77249c 100644
--- a/buildSrc/src/main/kotlin/ktx/Versions.kt
+++ b/buildSrc/src/main/kotlin/ktx/Versions.kt
@@ -1,7 +1,7 @@
 package ktx
 
 const val gdxVersion = "1.10.0"
-const val kotlinCoroutinesVersion = "1.6.0"
+const val kotlinCoroutinesVersion = "1.6.1"
 
 const val ashleyVersion = "1.7.4"
 const val visUiVersion = "1.5.0"
diff --git a/gradle.properties b/gradle.properties
index b19a63ac..373281a8 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,6 +1,6 @@
 libGroup=io.github.libktx
 
-kotlinVersion=1.6.10
+kotlinVersion=1.6.21
 
 dokkaVersion=1.5.30
 junitPlatformVersion=1.2.0