diff --git a/app/build.gradle b/app/build.gradle
index 8dd66e0..4ee0608 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -77,18 +77,18 @@ android {
 }
 
 dependencies {
-    def nav_version = "2.5.0"
-    def room_version = "2.4.2"
+    def nav_version = "2.5.2"
+    def room_version = "2.4.3"
     def paging_version = "3.1.1"
 
     implementation fileTree(dir: 'libs', include: ['*.jar'])
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
-    implementation 'androidx.appcompat:appcompat:1.4.2'
-    implementation 'androidx.core:core:1.8.0'
+    implementation 'androidx.appcompat:appcompat:1.5.1'
+    implementation 'androidx.core:core:1.9.0'
     implementation 'androidx.cardview:cardview:1.0.0'
     implementation 'androidx.gridlayout:gridlayout:1.0.0'
     implementation "com.google.android.material:material:1.6.1"
-    implementation 'androidx.fragment:fragment-ktx:1.5.0'
+    implementation 'androidx.fragment:fragment-ktx:1.5.2'
 
     implementation "androidx.navigation:navigation-fragment-ktx:$nav_version"
     implementation "androidx.navigation:navigation-ui:$nav_version"
@@ -102,7 +102,7 @@ dependencies {
     implementation "androidx.paging:paging-runtime:$paging_version"
 
     implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.5.2'
-    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.5.2'
+    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.6.1'
 
     implementation 'androidx.biometric:biometric:1.1.0'
 
diff --git a/app/src/main/java/io/timelimit/android/ui/user/create/DefaultCategories.kt b/app/src/main/java/io/timelimit/android/ui/user/create/DefaultCategories.kt
index 2f4e227..79c19cc 100644
--- a/app/src/main/java/io/timelimit/android/ui/user/create/DefaultCategories.kt
+++ b/app/src/main/java/io/timelimit/android/ui/user/create/DefaultCategories.kt
@@ -79,7 +79,7 @@ class DefaultCategories private constructor(private val context: Context) {
                         id = IdGenerator.generateId(),
                         categoryId = categoryId,
                         applyToExtraTimeUsage = false,
-                        dayMask = 1 + 2 + 4 + 8 + 16 + 32 + 64,
+                        dayMask = (1 + 2 + 4 + 8 + 16 + 32 + 64).toByte(),
                         maximumTimeInMillis = 1000 * 60 * 60 * 6,    // 6 hours
                         startMinuteOfDay = TimeLimitRule.MIN_START_MINUTE,
                         endMinuteOfDay = TimeLimitRule.MAX_END_MINUTE,
@@ -95,7 +95,7 @@ class DefaultCategories private constructor(private val context: Context) {
                         id = IdGenerator.generateId(),
                         categoryId = categoryId,
                         applyToExtraTimeUsage = true,
-                        dayMask = 1 + 2 + 4 + 8 + 16,
+                        dayMask = (1 + 2 + 4 + 8 + 16).toByte(),
                         maximumTimeInMillis = 0,
                         startMinuteOfDay = 0,
                         endMinuteOfDay = 6 * 60 - 1,
@@ -110,7 +110,7 @@ class DefaultCategories private constructor(private val context: Context) {
                         id = IdGenerator.generateId(),
                         categoryId = categoryId,
                         applyToExtraTimeUsage = true,
-                        dayMask = 1 + 2 + 4 + 8 + 16,
+                        dayMask = (1 + 2 + 4 + 8 + 16).toByte(),
                         maximumTimeInMillis = 0,
                         startMinuteOfDay = 18 * 60,
                         endMinuteOfDay = MinuteOfDay.MAX,
@@ -126,7 +126,7 @@ class DefaultCategories private constructor(private val context: Context) {
                         id = IdGenerator.generateId(),
                         categoryId = categoryId,
                         applyToExtraTimeUsage = true,
-                        dayMask = 32 + 64,
+                        dayMask = (32 + 64).toByte(),
                         maximumTimeInMillis = 0,
                         startMinuteOfDay = 0,
                         endMinuteOfDay = 9 * 60 - 1,
@@ -141,7 +141,7 @@ class DefaultCategories private constructor(private val context: Context) {
                         id = IdGenerator.generateId(),
                         categoryId = categoryId,
                         applyToExtraTimeUsage = true,
-                        dayMask = 32 + 64,
+                        dayMask = (32 + 64).toByte(),
                         maximumTimeInMillis = 0,
                         startMinuteOfDay = 20 * 60,
                         endMinuteOfDay = MinuteOfDay.MAX,
diff --git a/build.gradle b/build.gradle
index d1e79e8..c0d3d67 100644
--- a/build.gradle
+++ b/build.gradle
@@ -18,15 +18,15 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    ext.kotlin_version = '1.6.21'
+    ext.kotlin_version = '1.7.10'
     repositories {
         google()
         mavenCentral()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:7.2.2'
+        classpath 'com.android.tools.build:gradle:7.3.0'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
-        classpath 'androidx.navigation:navigation-safe-args-gradle-plugin:2.4.2'
+        classpath 'androidx.navigation:navigation-safe-args-gradle-plugin:2.5.2'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 83070a0..38706c0 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -2,5 +2,5 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.3.3-all.zip
-distributionSha256Sum=c9490e938b221daf0094982288e4038deed954a3f12fb54cbf270ddf4e37d879
\ No newline at end of file
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.4-all.zip
+distributionSha256Sum=cd5c2958a107ee7f0722004a12d0f8559b4564c34daad7df06cffd4d12a426d0
\ No newline at end of file