diff --git a/CHANGELOG.md b/CHANGELOG.md
index 29e9465..b8a5641 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@
 
 - Added `getRedirectURIs` endpoint
 - Added `getDataStreamSummary` endpoint
+- Added `applicationData` parameter to `study.setInvitation` endpoint
 
 ### Fixed
 
diff --git a/src/endpoints/study/index.ts b/src/endpoints/study/index.ts
index 2177133..7887ddd 100644
--- a/src/endpoints/study/index.ts
+++ b/src/endpoints/study/index.ts
@@ -164,14 +164,23 @@ class Study extends Endpoint {
     studyId,
     title,
     description,
+    applicationData,
   }: {
     studyId: string;
     title: string;
     description: string;
+    applicationData?: {
+      studyId: string;
+      [key: string]: string;
+    } | null;
   }) {
     const setInvitation = new StudyServiceRequest.SetInvitation(
       new UUID(studyId),
-      new StudyInvitation(title, description),
+      new StudyInvitation(
+        title,
+        description,
+        applicationData ? JSON.stringify(applicationData) : null,
+      ),
     );
     const request = serialize({
       request: setInvitation,
diff --git a/src/test/endpoints/study/study.test.ts b/src/test/endpoints/study/study.test.ts
index c221c81..6ccbaba 100644
--- a/src/test/endpoints/study/study.test.ts
+++ b/src/test/endpoints/study/study.test.ts
@@ -124,6 +124,31 @@ describe("Study", () => {
     expect(retrievedStudy.invitation.description).toBe("This is an invitation");
   });
 
+  it("should be able to set invitation with application data", async () => {
+    await testClient.study.setInvitation({
+      studyId: study.studyId.stringRepresentation,
+      title: "Invitation",
+      description: "This is an invitation",
+      applicationData: {
+        studyId: study.studyId.stringRepresentation,
+        key2: "value2",
+      },
+    });
+
+    const retrievedStudy = await testClient.study.getDetails({
+      studyId: study.studyId.stringRepresentation,
+    });
+
+    expect(retrievedStudy).toBeInstanceOf(StudyDetails);
+    expect(retrievedStudy.invitation.name).toBe("Invitation");
+    expect(retrievedStudy.invitation.description).toBe("This is an invitation");
+    const applicationData = JSON.parse(
+      retrievedStudy.invitation.applicationData,
+    );
+    expect(applicationData.studyId).toEqual(study.studyId.stringRepresentation);
+    expect(applicationData.key2).toEqual("value2");
+  });
+
   it("setting invitation for a study that does not exist should throw an error", async () => {
     try {
       await testClient.study.setInvitation({