Get the project syncing and building again.

app/build.gradle

@@ -5,22 +5,22 @@ android {
     namespace "com.hyperling.apps.the45minuterule"
     defaultConfig {
         applicationId "com.hyperling.apps.the45minuterule"
-        minSdkVersion 14
+        minSdkVersion 23
         targetSdkVersion 36
-        versionCode 8
-        versionName "1.07"
+        versionCode 9
+        versionName "1.0.8"
     }
     buildTypes {
         release {
             minifyEnabled true
-            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
         }
     }
 }
 
 dependencies {
     //compile fileTree(dir: 'libs', include: ['*.jar'])
-    implementation fileTree(dir: 'libs', include: ['*.jar'])
-    testImplementation 'junit:junit:4.12'
-    implementation group: 'com.android.support', name: 'appcompat-v7', version: '28.0.0'
+    //implementation fileTree(dir: 'libs', include: ['*.jar'])
+    testImplementation 'junit:junit:4.13.2'
+    implementation "androidx.appcompat:appcompat:1.8.0"
 }