diff --git a/src/app/core/services/course.ts b/src/app/core/services/course.ts
index ce804f1..9ab3dee 100644
--- a/src/app/core/services/course.ts
+++ b/src/app/core/services/course.ts
@@ -37,6 +37,10 @@ export interface CourseApiResponse {
   typesParisOuverts: Array<string>;
 }
 
+export interface NonApiRequest {
+  nonPartants: String[]
+}
+
 @Injectable({ providedIn: 'root' })
 export class CourseService {
   private apiUrl = environment.apiBaseUrl + API_BASE;
@@ -454,34 +458,20 @@ export class CourseService {
   }
 
   addNonPartant(courseId: string, npList: string[]) {
+    const payload = {
+      nonPartants: [...npList]
+    }
     console.warn('addNonPartant is deprecated. Use setNonPartants instead.');
-    return this.setNonPartants(courseId, npList);
+    return this.setNonPartants(courseId, payload);
   }
 
-  setNonPartants(courseId: string, npList: string[]): Observable<Course | undefined> {
-    if (USE_SERVER) {
-      // Use PUT endpoint to replace the entire list
-      return this.nonPartantService.replaceNonPartants(courseId, npList).pipe(
-        switchMap((updatedNonPartants) => {
-          // Fetch the updated course to return it
-          return this.getById(courseId).pipe(
-            map((course) => {
-              if (course) {
-                return {
-                  ...course,
-                  nonPartants: updatedNonPartants,
-                };
-              }
-              return undefined;
-            })
-          );
-        }),
-        catchError((err) => {
-          console.error(`Error setting nonPartants for course ${courseId}:`, err);
-          return of(undefined);
-        })
-      );
-    }
-    throw new Error('Server mode is required');
+  setNonPartants(courseId: string, npList: NonApiRequest): Observable<CourseApiResponse | undefined> {
+    return this.nonPartantService.replaceNonPartants(courseId, npList).pipe(
+      map((updatedNonPartants) => updatedNonPartants),
+      catchError((err) => {
+        console.error(`Error setting nonPartants for course ${courseId}:`, err);
+        return of(undefined);
+      })
+    );
   }
 }
diff --git a/src/app/core/services/non-partant.ts b/src/app/core/services/non-partant.ts
index d2773c1..8f58a75 100644
--- a/src/app/core/services/non-partant.ts
+++ b/src/app/core/services/non-partant.ts
@@ -3,6 +3,7 @@ import { HttpClient } from '@angular/common/http';
 import { Observable, of } from 'rxjs';
 import { map, catchError } from 'rxjs/operators';
 import { environment } from 'src/environments/environment.development';
+import { CourseApiResponse, NonApiRequest } from './course';
 
 const USE_SERVER = true;
 
@@ -20,21 +21,22 @@ export class NonPartantService {
   }
 
   // PUT /api/v1/courses/{courseId}/non-partants - Replace the list of non-partants for a course
-  replaceNonPartants(courseId: string, nonPartants: string[]): Observable<string[]> {
-    if (USE_SERVER) {
-      const courseApiUrl = environment.apiBaseUrl + '/api/v1/courses';
-      return this.http
-        .put<string[]>(`${courseApiUrl}/${courseId}/non-partants`, nonPartants, {
-          headers: this.getNgrokHeaders(),
+  replaceNonPartants(courseId: string, nonPartants: NonApiRequest): Observable<CourseApiResponse | undefined> {
+    const courseApiUrl = environment.apiBaseUrl + '/api/courses';
+    return this.http
+      .patch<CourseApiResponse>(`${courseApiUrl}/${courseId}/non-partants`, nonPartants, {
+        headers: this.getNgrokHeaders(),
+      })
+      .pipe(
+        map((res) => {
+          
+          return res
+        }),
+        catchError((err) => {
+          console.log(err);
+          console.error(`Error replacing non-partants for course ${courseId}:`, err);
+          return of(undefined);
         })
-        .pipe(
-          map((list) => list.map((np) => String(np))),
-          catchError((err) => {
-            console.error(`Error replacing non-partants for course ${courseId}:`, err);
-            return of([]);
-          })
-        );
-    }
-    return of([]);
+      );
   }
 }
diff --git a/src/app/dashboard/pages/courses/courses.ts b/src/app/dashboard/pages/courses/courses.ts
index 4c7f435..aeb3060 100644
--- a/src/app/dashboard/pages/courses/courses.ts
+++ b/src/app/dashboard/pages/courses/courses.ts
@@ -16,7 +16,7 @@ import { ZardCardComponent } from '@shared/components/card/card.component';
 import { ZardButtonComponent } from '@shared/components/button/button.component';
 import { CourseStatut, Course as CourseType } from 'src/app/core/interfaces/course';
 import { SortDir } from '@shared/paging/paging';
-import { CourseApiResponse, CourseService } from 'src/app/core/services/course';
+import { CourseApiResponse, CourseService, NonApiRequest } from 'src/app/core/services/course';
 import { ResultatService } from 'src/app/core/services/resultat';
 import { Resultat, ResultatStatut } from 'src/app/core/interfaces/resultat';
 import { A11yModule } from '@angular/cdk/a11y';
@@ -347,8 +347,13 @@ export class Course {
   onNonPartantSave(payload: string[]) {
     const course = this.selectedCourse();
     if (!course) return;
+    const reqPayload = {
+      nonPartants: [
+        ...payload
+      ]
+    }
 
-    this.api.setNonPartants(course.id, payload).subscribe({
+    this.api.setNonPartants(course.id, reqPayload).subscribe({
       next: (updatedCourse) => {
         if (updatedCourse) {
           toast.success('Non-partants mis à jour avec succès');
diff --git a/src/environments/environment.ts b/src/environments/environment.ts
index ebdba47..cceeab3 100644
--- a/src/environments/environment.ts
+++ b/src/environments/environment.ts
@@ -1,4 +1,4 @@
 export const environment = {
   production: false,
-  apiBaseUrl: 'http://192.168.1.235:8383',
+  apiBaseUrl: 'http://192.168.1.235:8381',
 };