diff --git a/app/build.gradle b/app/build.gradle
index 5e02bdd..47a39d9 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -30,11 +30,28 @@ android {
             minifyEnabled true
             shrinkResources true
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
-            buildConfigField "Integer", "DB_VERSION", "1"
+            buildConfigField "Integer", "DB_VERSION", db_version
             buildConfigField "Boolean", "TEST", "false"
         }
+
+        beta {
+            minifyEnabled true
+            shrinkResources true
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+            buildConfigField "Integer", "DB_VERSION", db_version
+            buildConfigField "Boolean", "TEST", "false"
+        }
+
+        alpha {
+            minifyEnabled true
+            shrinkResources true
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+            buildConfigField "Integer", "DB_VERSION", db_version
+            buildConfigField "Boolean", "TEST", "true"
+        }
+
         debug {
-            buildConfigField "Integer", "DB_VERSION", "1"
+            buildConfigField "Integer", "DB_VERSION", db_version
             buildConfigField "Boolean", "TEST", "true"
         }
     }
@@ -89,6 +106,8 @@ dependencies {
     //noinspection GradleDependency
     implementation 'com.journeyapps:zxing-android-embedded:3.6.0'
 
+    implementation 'com.github.Ilhasoft:data-binding-validator:2.0.0'
+
     // Test
     testImplementation 'junit:junit:4.12'
     androidTestImplementation 'androidx.test.ext:junit:1.1.1'
diff --git a/app/src/main/res/layout/fragment_add_attestation.xml b/app/src/main/res/layout/fragment_add_attestation.xml
index 258b519..4ec5afc 100644
--- a/app/src/main/res/layout/fragment_add_attestation.xml
+++ b/app/src/main/res/layout/fragment_add_attestation.xml
@@ -88,7 +88,9 @@
                         android:layout_width="match_parent"
                         android:layout_height="wrap_content"
                         android:inputType="date"
-                        android:text="@={viewModel.birthday}" />
+                        android:text="@={viewModel.birthday}"
+                        app:validateDate='@{"dd/MM/yyyy"}'
+                        app:validateDateMessage="@{@string/date_error_message}"/>
 
                 </com.google.android.material.textfield.TextInputLayout>
 
@@ -163,7 +165,9 @@
                         android:layout_width="match_parent"
                         android:layout_height="wrap_content"
                         android:inputType="date"
-                        android:text="@={viewModel.exitDate}" />
+                        android:text="@={viewModel.exitDate}"
+                        app:validateDate='@{"dd/MM/yyyy"}'
+                        app:validateDateMessage="@{@string/date_error_message}"/>
 
                 </com.google.android.material.textfield.TextInputLayout>
 
diff --git a/app/src/main/res/values/errors.xml b/app/src/main/res/values/errors.xml
index 066fca2..48b55f1 100644
--- a/app/src/main/res/values/errors.xml
+++ b/app/src/main/res/values/errors.xml
@@ -1,7 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
 
+    <!-- Validator -->
+    <string name="date_error_message">Votre date doit être au format 01/01/1970</string>
+
     <string name="error_cannot_create_attestation">Erreur lors de la génération de l\'attestation, tout les champs ne sont pas compléter</string>
     <string name="error_failed_create_pdf">Erreur lors de la génération de l\'attestion, veuillez vérifiez vos champs ou contacter le développeur.</string>
-
 </resources>
\ No newline at end of file
diff --git a/build.gradle b/build.gradle
index 84b783e..6c8070b 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,7 +1,12 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    ext.kotlin_version = '1.3.72'
+    ext {
+        kotlin_version = '1.3.72'
+        db_version = '1'
+
+    }
+
     repositories {
         google()
         jcenter()
@@ -20,7 +25,7 @@ allprojects {
     repositories {
         google()
         jcenter()
-        
+        maven { url 'https://jitpack.io' }
     }
 }