diff --git a/Sources/Modele/MethodePayement.cs b/Sources/Modele/MethodePayement.cs
new file mode 100644
index 0000000..489d19f
--- /dev/null
+++ b/Sources/Modele/MethodePayement.cs
@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Model
+{
+    public enum MethodePayement
+    {
+        None,
+        Cb,
+        Esp,
+        Chq,
+        Vir,
+        Pre
+    }
+}
diff --git a/Sources/Modele/Planification.cs b/Sources/Modele/Planification.cs
index af0f1df..fc8a677 100644
--- a/Sources/Modele/Planification.cs
+++ b/Sources/Modele/Planification.cs
@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
+using System.Text.Json.Serialization;
 using System.Threading.Tasks;
 
 namespace Model