diff --git a/app/build.gradle b/app/build.gradle
index 4b6c3d4..411181a 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -90,20 +90,20 @@ dependencies {
     implementation 'androidx.appcompat:appcompat:1.1.0'
     implementation 'androidx.preference:preference:1.1.0'
     implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
-    implementation 'com.google.android.material:material:1.1.0-beta01'
+    implementation 'com.google.android.material:material:1.1.0'
     implementation 'androidx.legacy:legacy-support-v13:1.0.0'
     implementation 'com.commonsware.cwac:anddown:0.3.0'
-    implementation 'com.google.firebase:firebase-core:17.2.1'
-    implementation 'com.android.billingclient:billing:1.2'
+    implementation 'com.google.firebase:firebase-core:17.2.3'
+    implementation 'com.android.billingclient:billing:2.1.0'
     implementation 'com.crashlytics.sdk.android:crashlytics:2.10.1'
-    implementation "androidx.core:core-ktx:1.1.0"
-    implementation 'androidx.browser:browser:1.0.0'
+    implementation "androidx.core:core-ktx:1.2.0"
+    implementation 'androidx.browser:browser:1.2.0'
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
     def coroutines_version = "1.3.0-RC2"
     implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:$coroutines_version"
     implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:$coroutines_version"
 
-    def lifecycle_version = "2.1.0"
+    def lifecycle_version = "2.2.0"
     implementation "androidx.lifecycle:lifecycle-extensions:$lifecycle_version"
     kapt "androidx.lifecycle:lifecycle-common-java8:$lifecycle_version"
     implementation 'eu.crydee:syllable-counter:4.0.2'
diff --git a/app/src/main/java/com/wbrawner/simplemarkdown/view/activity/SupportActivity.kt b/app/src/main/java/com/wbrawner/simplemarkdown/view/activity/SupportActivity.kt
index a373061..282227d 100644
--- a/app/src/main/java/com/wbrawner/simplemarkdown/view/activity/SupportActivity.kt
+++ b/app/src/main/java/com/wbrawner/simplemarkdown/view/activity/SupportActivity.kt
@@ -66,8 +66,8 @@ class SupportActivity : AppCompatActivity(), BillingClientStateListener, Purchas
         return super.onOptionsItemSelected(item)
     }
 
-    override fun onBillingSetupFinished(responseCode: Int) {
-        if (responseCode != BillingClient.BillingResponse.OK) {
+    override fun onBillingSetupFinished(result: BillingResult?) {
+        if (result?.responseCode != BillingClient.BillingResponseCode.OK) {
             return
         }
 
@@ -75,9 +75,9 @@ class SupportActivity : AppCompatActivity(), BillingClientStateListener, Purchas
                 .setSkusList(listOf("support_the_developer", "tip_coffee", "tip_beer"))
                 .setType(BillingClient.SkuType.INAPP)
                 .build()
-        billingClient.querySkuDetailsAsync(skuDetails) { skuDetailsResponseCode, skuDetailsList ->
+        billingClient.querySkuDetailsAsync(skuDetails) { skuDetailsResponse, skuDetailsList ->
             // Process the result.
-            if (skuDetailsResponseCode != BillingClient.BillingResponse.OK || skuDetailsList.isNullOrEmpty()) {
+            if (skuDetailsResponse?.responseCode != BillingClient.BillingResponseCode.OK || skuDetailsList.isNullOrEmpty()) {
                 return@querySkuDetailsAsync
             }
 
@@ -103,9 +103,12 @@ class SupportActivity : AppCompatActivity(), BillingClientStateListener, Purchas
         billingClient.startConnection(this)
     }
 
-    override fun onPurchasesUpdated(responseCode: Int, purchases: List<Purchase>?) {
+    override fun onPurchasesUpdated(result: BillingResult?, purchases: MutableList<Purchase>?) {
         purchases?.forEach { purchase ->
-            billingClient.consumeAsync(purchase.purchaseToken) { _, _ ->
+            val consumeParams = ConsumeParams.newBuilder()
+                    .setPurchaseToken(purchase.purchaseToken)
+                    .build()
+            billingClient.consumeAsync(consumeParams) { _, _ ->
                 Toast.makeText(
                         this@SupportActivity,
                         getString(R.string.support_thank_you),
diff --git a/build.gradle b/build.gradle
index b8fecd6..7a828b3 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,7 +1,7 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    ext.kotlin_version = '1.3.50'
+    ext.kotlin_version = '1.3.61'
     repositories {
         jcenter()
         google()
@@ -10,8 +10,8 @@ buildscript {
         }
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.5.2'
-        classpath 'com.google.gms:google-services:4.3.2'
+        classpath 'com.android.tools.build:gradle:3.6.1'
+        classpath 'com.google.gms:google-services:4.3.3'
         classpath 'io.fabric.tools:gradle:1.31.0'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index cd77515..1da66c8 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Wed Nov 06 17:12:14 CST 2019
+#Thu Mar 19 08:56:07 CST 2020
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.4.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.4-all.zip