diff --git a/editoast/editoast_schemas/src/primitives/duration.rs b/editoast/editoast_schemas/src/primitives/duration.rs
index 52aad6cee2e..39886e63b57 100644
--- a/editoast/editoast_schemas/src/primitives/duration.rs
+++ b/editoast/editoast_schemas/src/primitives/duration.rs
@@ -57,7 +57,7 @@ pub enum PositiveDurationError {
 /// let err_s = r#"{"duration":"P1M"}"#; // 1 month
 /// assert!(serde_json::from_str::<MyStruct>(err_s).is_err());
 /// ```
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, PartialEq)]
 pub struct PositiveDuration(ChronoDuration);
 
 impl TryFrom<ChronoDuration> for PositiveDuration {
diff --git a/editoast/openapi.yaml b/editoast/openapi.yaml
index e6eb16f1d91..9e221bcf5f9 100644
--- a/editoast/openapi.yaml
+++ b/editoast/openapi.yaml
@@ -1626,6 +1626,7 @@ paths:
       tags:
       - timetable
       - paced_train
+      summary: Update a paced train
       parameters:
       - name: id
         in: path
@@ -1637,7 +1638,26 @@ paths:
         content:
           application/json:
             schema:
-              $ref: '#/components/schemas/PacedTrainForm'
+              allOf:
+              - $ref: '#/components/schemas/TrainScheduleBase'
+              - type: object
+                required:
+                - paced
+                properties:
+                  paced:
+                    type: object
+                    required:
+                    - duration
+                    - step
+                    properties:
+                      duration:
+                        type: string
+                        description: Duration of the paced train, an ISO 8601 format is expected
+                        example: PT2H
+                      step:
+                        type: string
+                        description: Time between two occurrences, an ISO 8601 format is expected
+                        example: PT15M
         required: true
       responses:
         '200':
diff --git a/editoast/src/views/paced_train.rs b/editoast/src/views/paced_train.rs
index 9bc670b776e..a1cb8c5fbc6 100644
--- a/editoast/src/views/paced_train.rs
+++ b/editoast/src/views/paced_train.rs
@@ -26,6 +26,7 @@ use super::SimulationSummaryResult;
 use crate::core::simulation::SimulationResponse;
 use crate::error::Result;
 use crate::models::paced_train::PacedTrain;
+use crate::models::paced_train::PacedTrainChangeset;
 use crate::models::prelude::*;
 use crate::views::projection::ProjectPathTrainResult;
 use crate::views::AuthorizationError;
@@ -130,6 +131,43 @@ async fn get_by_id(
     Ok(Json(paced_train))
 }
 
+/// Update a paced train
+#[utoipa::path(
+    put, path = "",
+    tag = "timetable,paced_train",
+    params(PacedTrainIdParam),
+    request_body = inline(PacedTrainBase),
+    responses(
+        (status = 200, body = PacedTrainResult, description = "Paced train have been updated")
+    )
+)]
+async fn update_paced_train(
+    State(db_pool): State<DbConnectionPoolV2>,
+    Extension(auth): AuthenticationExt,
+    Path(PacedTrainIdParam { id: paced_train_id }): Path<PacedTrainIdParam>,
+    Json(paced_train_base): Json<PacedTrainBase>,
+) -> Result<impl IntoResponse> {
+    let authorized = auth
+        .check_roles([BuiltinRole::OperationalStudies, BuiltinRole::Stdcm].into())
+        .await
+        .map_err(AuthorizationError::AuthError)?;
+    if !authorized {
+        return Err(AuthorizationError::Forbidden.into());
+    }
+
+    let conn = &mut db_pool.get().await?;
+    let paced_train_changeset: PacedTrainChangeset = paced_train_base.into();
+    let paced_train = paced_train_changeset
+        .update_or_fail(conn, paced_train_id, || {
+            PacedTrainError::PacedTrainNotFound { paced_train_id }
+        })
+        .await?;
+
+    let paced_train_result: PacedTrainResult = paced_train.into();
+
+    Ok(Json(paced_train_result))
+}
+
 /// Delete a paced train
 #[utoipa::path(
     delete, path = "",
@@ -163,26 +201,6 @@ async fn delete(
     Ok(axum::http::StatusCode::NO_CONTENT)
 }
 
-#[utoipa::path(
-    put, path = "",
-    tag = "timetable,paced_train",
-    request_body = PacedTrainForm,
-    params(PacedTrainIdParam),
-    responses(
-        (status = 200, description = "Paced train have been updated", body = PacedTrainResult)
-    )
-)]
-async fn update_paced_train(
-    State(_db_pool): State<DbConnectionPoolV2>,
-    Extension(_auth): AuthenticationExt,
-    Path(PacedTrainIdParam {
-        id: _paced_train_id,
-    }): Path<PacedTrainIdParam>,
-    Json(_paced_train_form): Json<PacedTrainForm>,
-) -> Result<Json<PacedTrainResult>> {
-    todo!();
-}
-
 #[derive(Debug, Clone, Deserialize, ToSchema)]
 struct SimulationBatchForm {
     infra_id: i64,
@@ -316,6 +334,7 @@ async fn project_path(
 #[cfg(test)]
 mod tests {
     use axum::http::StatusCode;
+    use chrono::Duration;
     use pretty_assertions::assert_eq;
     use rstest::rstest;
     use serde_json::json;
@@ -346,6 +365,32 @@ mod tests {
         assert_eq!(response.len(), 1);
     }
 
+    #[rstest]
+    async fn update_paced_train() {
+        let app = TestAppBuilder::default_app();
+        let pool = app.db_pool();
+
+        let timetable = create_timetable(&mut pool.get_ok()).await;
+        let paced_train = create_simple_paced_train(&mut pool.get_ok(), timetable.id).await;
+
+        let mut paced_train_base = simple_paced_train_base();
+        paced_train_base.paced.duration = Duration::minutes(90).try_into().unwrap();
+        paced_train_base.paced.step = Duration::minutes(15).try_into().unwrap();
+
+        let request = app
+            .put(format!("/paced_train/{}", paced_train.id).as_str())
+            .json(&json!(&paced_train_base));
+
+        let response: PacedTrainResult =
+            app.fetch(request).assert_status(StatusCode::OK).json_into();
+
+        assert_eq!(
+            response.paced_train.paced.duration,
+            paced_train_base.paced.duration
+        );
+        assert_eq!(response.paced_train.paced.step, paced_train_base.paced.step);
+    }
+
     #[rstest]
     async fn paced_train_delete() {
         let app = TestAppBuilder::default_app();
diff --git a/front/src/common/api/generatedEditoastApi.ts b/front/src/common/api/generatedEditoastApi.ts
index ab8bba6e601..b0873110c0b 100644
--- a/front/src/common/api/generatedEditoastApi.ts
+++ b/front/src/common/api/generatedEditoastApi.ts
@@ -512,7 +512,7 @@ const injectedRtkApi = api
         query: (queryArg) => ({
           url: `/paced_train/${queryArg.id}`,
           method: 'PUT',
-          body: queryArg.pacedTrainForm,
+          body: queryArg.body,
         }),
         invalidatesTags: ['timetable', 'paced_train'],
       }),
@@ -1604,7 +1604,14 @@ export type PutPacedTrainByIdApiResponse =
   /** status 200 Paced train have been updated */ PacedTrainResult;
 export type PutPacedTrainByIdApiArg = {
   id: number;
-  pacedTrainForm: PacedTrainForm;
+  body: TrainScheduleBase & {
+    paced: {
+      /** Duration of the paced train, an ISO 8601 format is expected */
+      duration: string;
+      /** Time between two occurrences, an ISO 8601 format is expected */
+      step: string;
+    };
+  };
 };
 export type GetPacedTrainByIdPathApiResponse = /** status 200 The path */ PathfindingResult;
 export type GetPacedTrainByIdPathApiArg = {
@@ -3249,10 +3256,6 @@ export type PacedTrainResult = PacedTrainBase & {
   id: number;
   timetable_id: number;
 };
-export type PacedTrainForm = PacedTrainBase & {
-  /** Timetable attached to the train schedule */
-  timetable_id?: number | null;
-};
 export type ReportTrain = {
   /** Total energy consumption */
   energy_consumption: number;