diff --git a/matrix-sdk-android/build.gradle b/matrix-sdk-android/build.gradle
index 0ca605dc8b..2b3f727d9b 100644
--- a/matrix-sdk-android/build.gradle
+++ b/matrix-sdk-android/build.gradle
@@ -166,7 +166,7 @@ dependencies {
     implementation 'com.facebook.stetho:stetho-okhttp3:1.6.0'
 
     // Phone number https://github.com/google/libphonenumber
-    implementation 'com.googlecode.libphonenumber:libphonenumber:8.12.20'
+    implementation 'com.googlecode.libphonenumber:libphonenumber:8.12.21'
 
     testImplementation 'junit:junit:4.13.2'
     testImplementation 'org.robolectric:robolectric:4.5.1'
diff --git a/vector/build.gradle b/vector/build.gradle
index bf164facee..89d8757803 100644
--- a/vector/build.gradle
+++ b/vector/build.gradle
@@ -342,7 +342,7 @@ dependencies {
     implementation 'com.facebook.stetho:stetho:1.6.0'
 
     // Phone number https://github.com/google/libphonenumber
-    implementation 'com.googlecode.libphonenumber:libphonenumber:8.12.20'
+    implementation 'com.googlecode.libphonenumber:libphonenumber:8.12.21'
 
     // rx
     implementation 'io.reactivex.rxjava2:rxkotlin:2.4.0'