diff --git a/runtime/gdev/src/lib.rs b/runtime/gdev/src/lib.rs
index e010fc67c60d1ca5231a3f51791c56a7553e8026..798fe3daea02c1224f62561ec0722eb95b5b1a82 100644
--- a/runtime/gdev/src/lib.rs
+++ b/runtime/gdev/src/lib.rs
@@ -28,6 +28,8 @@ extern crate frame_benchmarking;
 
 pub mod parameters;
 
+mod migrations_v400;
+
 pub use self::parameters::*;
 pub use common_runtime::{
     constants::*, entities::*, handlers::*, AccountId, Address, Balance, BlockNumber,
@@ -127,6 +129,7 @@ pub type Executive = frame_executive::Executive<
     frame_system::ChainContext<Runtime>,
     Runtime,
     AllPalletsWithSystem,
+    migrations_v400::MigrationsV400,
 >;
 
 pub type TechnicalCommitteeInstance = Instance2;
diff --git a/runtime/gdev/src/migrations_v400.rs b/runtime/gdev/src/migrations_v400.rs
new file mode 100644
index 0000000000000000000000000000000000000000..fb82240168ba0bc64a6a1e8f95ba90a30faf8ab9
--- /dev/null
+++ b/runtime/gdev/src/migrations_v400.rs
@@ -0,0 +1,45 @@
+// Copyright 2021-2022 Axiom-Team
+//
+// This file is part of Duniter-v2S.
+//
+// Duniter-v2S is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, version 3 of the License.
+//
+// Duniter-v2S is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with Duniter-v2S. If not, see <https://www.gnu.org/licenses/>.
+
+use crate::*;
+
+pub struct MigrationsV400;
+impl frame_support::traits::OnRuntimeUpgrade for MigrationsV400 {
+    fn on_runtime_upgrade() -> Weight {
+        let mut weight = 1_000_000_000; // Safety margin
+
+        type OldvalueType = AccountId;
+
+        pallet_membership::PendingMembership::<Runtime, Instance1>::translate_values(
+            |_: OldvalueType| {
+                weight += <Runtime as frame_system::Config>::DbWeight::get().write;
+                Some(())
+            },
+        );
+
+        weight
+    }
+
+    #[cfg(feature = "try-runtime")]
+    fn pre_upgrade() -> Result<(), &'static str> {
+        Ok(())
+    }
+
+    #[cfg(feature = "try-runtime")]
+    fn post_upgrade() -> Result<(), &'static str> {
+        Ok(())
+    }
+}