diff --git a/build.gradle.kts b/build.gradle.kts
index f48f1d1..f3bd642 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -1,13 +1,13 @@
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 
 plugins {
-    kotlin("jvm") version "1.6.21" apply false
-    id("org.jmailen.kotlinter") version "3.10.0" apply false
+    kotlin("jvm") version "1.7.10" apply false
+    id("org.jmailen.kotlinter") version "3.11.1" apply false
     id("com.github.ben-manes.versions") version "0.42.0"
 }
 subprojects {
     group = "com.github.cs125-illinois"
-    version = "2022.4.0"
+    version = "2022.9.0"
     tasks.withType<KotlinCompile> {
         kotlinOptions {
             jvmTarget = JavaVersion.VERSION_16.toString()
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index aa991fc..ae04661 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.4.2-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.5.1-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
diff --git a/library/build.gradle.kts b/library/build.gradle.kts
index 04c4816..cb33851 100644
--- a/library/build.gradle.kts
+++ b/library/build.gradle.kts
@@ -7,14 +7,14 @@ plugins {
 dependencies {
     kaptTest("com.squareup.moshi:moshi-kotlin-codegen:1.13.0")
 
-    implementation("io.ktor:ktor-server-core:2.0.0")
-    implementation("io.ktor:ktor-server-content-negotiation:2.0.0")
+    implementation("io.ktor:ktor-server-core:2.1.0")
+    implementation("io.ktor:ktor-server-content-negotiation:2.1.0")
     implementation("com.squareup.moshi:moshi-kotlin:1.13.0")
-    implementation("com.squareup.okio:okio:3.1.0")
+    implementation("com.squareup.okio:okio:3.2.0")
 
     testImplementation(kotlin("test"))
     testImplementation("com.google.truth:truth:1.1.3")
-    testImplementation("io.ktor:ktor-server-test-host:2.0.0")
+    testImplementation("io.ktor:ktor-server-test-host:2.1.0")
 }
 tasks {
     val sourcesJar by creating(Jar::class) {
diff --git a/library/src/main/kotlin/com/ryanharter/ktor/moshi/MoshiConverter.kt b/library/src/main/kotlin/com/ryanharter/ktor/moshi/MoshiConverter.kt
index 29b1651..3af1b34 100644
--- a/library/src/main/kotlin/com/ryanharter/ktor/moshi/MoshiConverter.kt
+++ b/library/src/main/kotlin/com/ryanharter/ktor/moshi/MoshiConverter.kt
@@ -3,19 +3,19 @@
 package com.ryanharter.ktor.moshi
 
 import com.squareup.moshi.Moshi
+import io.ktor.content.TextContent
 import io.ktor.http.ContentType
-import io.ktor.http.content.TextContent
 import io.ktor.http.withCharset
 import io.ktor.serialization.ContentConverter
 import io.ktor.server.plugins.contentnegotiation.ContentNegotiationConfig
 import io.ktor.util.reflect.TypeInfo
 import io.ktor.utils.io.ByteReadChannel
-import io.ktor.utils.io.charsets.Charset
 import io.ktor.utils.io.jvm.javaio.toInputStream
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext
 import okio.buffer
 import okio.source
+import java.nio.charset.Charset
 
 class MoshiConverter(private val moshi: Moshi = Moshi.Builder().build()) : ContentConverter {
     override suspend fun deserialize(charset: Charset, typeInfo: TypeInfo, content: ByteReadChannel): Any? {
@@ -24,12 +24,18 @@ class MoshiConverter(private val moshi: Moshi = Moshi.Builder().build()) : Conte
         }
     }
 
-    override suspend fun serialize(
+    override suspend fun serializeNullable(
         contentType: ContentType,
         charset: Charset,
         typeInfo: TypeInfo,
-        value: Any
-    ) = TextContent(moshi.adapter(value.javaClass).toJson(value), contentType.withCharset(charset))
+        value: Any?
+    ) = TextContent(
+        moshi.adapter(
+            value?.javaClass
+                ?: Any::class.java
+        ).nullSafe().toJson(value),
+        contentType.withCharset(charset)
+    )
 }
 
 /**
diff --git a/sample/build.gradle.kts b/sample/build.gradle.kts
index b277bae..e8e2d81 100644
--- a/sample/build.gradle.kts
+++ b/sample/build.gradle.kts
@@ -8,10 +8,10 @@ dependencies {
     kapt("com.squareup.moshi:moshi-kotlin-codegen:1.13.0")
 
     implementation(project(":library"))
-    implementation("io.ktor:ktor-server-netty:2.0.0")
-    implementation("io.ktor:ktor-server-content-negotiation:2.0.0")
-    implementation("io.ktor:ktor-server-call-logging:2.0.0")
-    implementation("ch.qos.logback:logback-classic:1.2.11")
+    implementation("io.ktor:ktor-server-netty:2.1.0")
+    implementation("io.ktor:ktor-server-content-negotiation:2.1.0")
+    implementation("io.ktor:ktor-server-call-logging:2.1.0")
+    implementation("ch.qos.logback:logback-classic:1.4.0")
     implementation("com.squareup.moshi:moshi-adapters:1.13.0")
     implementation("com.squareup.moshi:moshi:1.13.0")
     implementation("com.squareup.moshi:moshi-kotlin:1.13.0")