diff --git a/app/build.gradle b/app/build.gradle
index 08d37827..9df17323 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -45,12 +45,12 @@ android {
         abortOnError true
     }
     compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_11
-        targetCompatibility = JavaVersion.VERSION_11
+        sourceCompatibility = JavaVersion.VERSION_17
+        targetCompatibility = JavaVersion.VERSION_17
     }
     kotlinOptions {
-        jvmTarget = JavaVersion.VERSION_11.toString()
-        languageVersion = "1.7"
+        jvmTarget = JavaVersion.VERSION_17.toString()
+        languageVersion = "1.8"
     }
     testOptions {
         unitTests.all {
diff --git a/contactsbackup/build.gradle b/contactsbackup/build.gradle
index a3d885a2..c00a4b40 100644
--- a/contactsbackup/build.gradle
+++ b/contactsbackup/build.gradle
@@ -22,12 +22,12 @@ android {
     }
 
     compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_11
-        targetCompatibility = JavaVersion.VERSION_11
+        sourceCompatibility = JavaVersion.VERSION_17
+        targetCompatibility = JavaVersion.VERSION_17
     }
 
     kotlinOptions {
-        jvmTarget = JavaVersion.VERSION_11.toString()
+        jvmTarget = JavaVersion.VERSION_17.toString()
     }
 
     testOptions {
diff --git a/storage/demo/build.gradle b/storage/demo/build.gradle
index ead579ac..130a49d6 100644
--- a/storage/demo/build.gradle
+++ b/storage/demo/build.gradle
@@ -32,11 +32,11 @@ android {
         }
     }
     compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_11
-        targetCompatibility = JavaVersion.VERSION_11
+        sourceCompatibility = JavaVersion.VERSION_17
+        targetCompatibility = JavaVersion.VERSION_17
     }
     kotlinOptions {
-        jvmTarget = JavaVersion.VERSION_11.toString()
+        jvmTarget = JavaVersion.VERSION_17.toString()
         freeCompilerArgs += "-opt-in=kotlin.RequiresOptIn"
     }
     lint {
diff --git a/storage/lib/build.gradle b/storage/lib/build.gradle
index 861ca2ab..447b2849 100644
--- a/storage/lib/build.gradle
+++ b/storage/lib/build.gradle
@@ -33,12 +33,12 @@ android {
         }
     }
     compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_11
-        targetCompatibility = JavaVersion.VERSION_11
+        sourceCompatibility = JavaVersion.VERSION_17
+        targetCompatibility = JavaVersion.VERSION_17
     }
     kotlinOptions {
-        jvmTarget = JavaVersion.VERSION_11.toString()
-        languageVersion = "1.7"
+        jvmTarget = JavaVersion.VERSION_17.toString()
+        languageVersion = "1.8"
         freeCompilerArgs += '-opt-in=kotlin.RequiresOptIn'
         freeCompilerArgs += '-Xexplicit-api=strict'
     }