diff --git a/src/main/java/etunicorn/entity/Personne.java b/src/main/java/etunicorn/entity/Personne.java
index 9093723..022e324 100644
--- a/src/main/java/etunicorn/entity/Personne.java
+++ b/src/main/java/etunicorn/entity/Personne.java
@@ -1,5 +1,7 @@
 package etunicorn.entity;
 
+import com.fasterxml.jackson.annotation.JsonFormat;
+
 import javax.persistence.*;
 import java.util.Date;
 
@@ -50,6 +52,7 @@ public class Personne {
         this.carte = carte;
     }
 
+    @JsonFormat(pattern="YYYY-MM-DD hh:mm:ss")
     public Date getNaissance() {
         return naissance;
     }
diff --git a/src/main/java/etunicorn/entity/Session.java b/src/main/java/etunicorn/entity/Session.java
index ed1b4f1..d24257b 100644
--- a/src/main/java/etunicorn/entity/Session.java
+++ b/src/main/java/etunicorn/entity/Session.java
@@ -1,5 +1,7 @@
 package etunicorn.entity;
 
+import com.fasterxml.jackson.annotation.JsonFormat;
+
 import javax.persistence.Entity;
 import javax.persistence.Id;
 import javax.persistence.ManyToOne;
@@ -58,6 +60,7 @@ public class Session {
         this.token = token;
     }
 
+    @JsonFormat(pattern="YYYY-MM-DD hh:mm:ss")
     public Date getValidity() {
         return validity;
     }
--
libgit2 0.21.2