diff --git a/app/build.gradle b/app/build.gradle
index c9fd3089..235a01ac 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -55,6 +55,6 @@ android {
 }
 
 dependencies {
-    implementation 'com.github.SimpleMobileTools:Simple-Commons:9e7ab2f67d'
+    implementation 'com.github.SimpleMobileTools:Simple-Commons:ac45c5e893'
     implementation 'com.github.tibbi:IndicatorFastScroll:08f512858a'
 }
diff --git a/app/src/main/res/values-cs/strings.xml b/app/src/main/res/values-cs/strings.xml
index 1bbe5945..606b41ff 100644
--- a/app/src/main/res/values-cs/strings.xml
+++ b/app/src/main/res/values-cs/strings.xml
@@ -22,7 +22,7 @@
     <string name="dialer">Telefon</string>
     <string name="accept">Přijmout</string>
     <string name="decline">Odmítnout</string>
-    <string name="Neznámý volající">Unknown Caller</string>
+    <string name="unknown_caller">Neznámý volající</string>
     <string name="is_calling">Volání…</string>
     <string name="dialing">Vytáčení…</string>
     <string name="call_ended">Hovor ukončen</string>
diff --git a/build.gradle b/build.gradle
index e5d9d8d5..c0309307 100644
--- a/build.gradle
+++ b/build.gradle
@@ -7,7 +7,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:4.1.3'
+        classpath 'com.android.tools.build:gradle:4.2.1'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
 
         // NOTE: Do not place your application dependencies here; they belong
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 40842063..5f3c9fcc 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.5-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.7.1-bin.zip