diff --git a/.github/workflows/run-test.yml b/.github/workflows/run-test.yml
index fbfca48d..6297724d 100644
--- a/.github/workflows/run-test.yml
+++ b/.github/workflows/run-test.yml
@@ -38,7 +38,7 @@ jobs:
         uses: ./.github/actions/prepare-android-env
 
       - name: Run test
-        run: ./gradlew codeCoverage --scan
+        run: ./gradlew codeCoverage
         env:
           LOUDIUS_CLIENT_SECRET: ${{ secrets.LOUDIUS_CLIENT_SECRET }}
           LOUDIUS_CLIENT_ID: ${{ secrets.LOUDIUS_CLIENT_ID }}
diff --git a/app/build.gradle b/app/build.gradle
index 52fc6daf..f8f2b8c9 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -85,7 +85,6 @@ android {
                     it.enabled = false
                 }
             }
-            unitTests.returnDefaultValues = true
         }
     }
     kapt {
@@ -189,15 +188,18 @@ dependencies {
     implementation "io.ktor:ktor-client-core:$ktor_version"
     implementation "io.ktor:ktor-client-okhttp:$ktor_version"
     implementation "io.ktor:ktor-client-content-negotiation:$ktor_version"
-    implementation "io.ktor:ktor-serialization-gson:$ktor_version"
+    implementation "io.ktor:ktor-serialization-kotlinx-json:$ktor_version"
     testImplementation("io.ktor:ktor-client-mock:$ktor_version")
 
+    implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.6.0")
+    implementation("org.jetbrains.kotlinx:kotlinx-datetime:0.4.1")
+    testImplementation("org.jetbrains.kotlinx:kotlinx-datetime:0.4.1")
+
     //retrofit & okhttp
     implementation 'com.squareup.okhttp3:okhttp:4.11.0'
     implementation 'com.squareup.okhttp3:logging-interceptor:4.10.0'
 
-    //gson
-    implementation 'com.google.code.gson:gson:2.10.1'
+
 
     testImplementation project(":app-shared-tests")
     androidTestImplementation(project(":app-shared-tests")) {
diff --git a/gradle.properties b/gradle.properties
index 08c17636..2cbd6d19 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -17,9 +17,6 @@ org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
 android.useAndroidX=true
 # Kotlin code style for this project: "official" or "obsolete":
 kotlin.code.style=official
-
-org.gradle.logging.stacktrace=all
-org.gradle.logging.level=debug
 # Enables namespacing of each library's R class so that its R class includes only the
 # resources declared in the library itself and none from the library's dependencies,
 # thereby reducing the size of the R class for that library