diff --git a/scm/driver/stash/content.go b/scm/driver/stash/content.go
index b2cd1364..603d7d33 100644
--- a/scm/driver/stash/content.go
+++ b/scm/driver/stash/content.go
@@ -56,7 +56,20 @@ func (s *contentService) Create(ctx context.Context, repo, path string, params *
 }
 
 func (s *contentService) Update(ctx context.Context, repo, path string, params *scm.ContentParams) (*scm.Response, error) {
-	return nil, scm.ErrNotSupported
+	namespace, repoName := scm.Split(repo)
+	endpoint := fmt.Sprintf("rest/api/1.0/projects/%s/repos/%s/browse/%s", namespace, repoName, path)
+	message := params.Message
+	if params.Signature.Name != "" && params.Signature.Email != "" {
+		message = fmt.Sprintf("%s\nSigned-off-by: %s <%s>", params.Message, params.Signature.Name, params.Signature.Email)
+	}
+	in := &contentCreateUpdate{
+		Message: message,
+		Branch:  params.Branch,
+		Content: params.Data,
+		Sha:     params.Sha,
+	}
+
+	return s.client.do(ctx, "PUT", endpoint, in, nil)
 }
 
 func (s *contentService) Delete(ctx context.Context, repo, path string, params *scm.ContentParams) (*scm.Response, error) {
diff --git a/scm/driver/stash/content_test.go b/scm/driver/stash/content_test.go
index 1bc67cef..4d531233 100644
--- a/scm/driver/stash/content_test.go
+++ b/scm/driver/stash/content_test.go
@@ -91,15 +91,37 @@ func TestContentCreate(t *testing.T) {
 	}
 
 	if resp.Status != 200 {
-		t.Error(err)
+		t.Errorf("got %d", resp.Status)
 	}
 }
 
 func TestContentUpdate(t *testing.T) {
-	content := new(contentService)
-	_, err := content.Update(context.Background(), "atlassian/atlaskit", "README", nil)
-	if err != scm.ErrNotSupported {
-		t.Errorf("Expect Not Supported error")
+	defer gock.Off()
+
+	gock.New("http://example.com:7990").
+		Put("/rest/api/1.0/projects/octocat/repos/hello-world/browse/README").
+		Reply(200).
+		Type("application/json").
+		File("testdata/content_update.json")
+
+	params := &scm.ContentParams{
+		Message: "my commit message",
+		Data:    []byte("bXkgbmV3IGZpbGUgY29udGVudHM="),
+		Sha:     "95b966ae1c166bd92f8ae7d1c313e738c731dfc3",
+		Signature: scm.Signature{
+			Name:  "Zaki",
+			Email: "zaki@example.com",
+		},
+	}
+
+	client, _ := New("http://example.com:7990")
+	resp, err := client.Contents.Update(context.Background(), "octocat/hello-world", "README", params)
+	if err != nil {
+		t.Error(err)
+	}
+
+	if resp.Status != 200 {
+		t.Errorf("got %d", resp.Status)
 	}
 }
 
diff --git a/scm/driver/stash/testdata/content_update.json b/scm/driver/stash/testdata/content_update.json
new file mode 100644
index 00000000..574ac8dd
--- /dev/null
+++ b/scm/driver/stash/testdata/content_update.json
@@ -0,0 +1,21 @@
+{
+    "id": "abcdef0123abcdef4567abcdef8987abcdef6543",
+    "displayId": "abcdef0123a",
+    "author": {
+        "name": "Zaki",
+        "emailAddress": "zaki@example.com"
+    },
+    "authorTimestamp": 1734286823374,
+    "committer": {
+        "name": "Zaki",
+        "emailAddress": "zaki@example.com"
+    },
+    "committerTimestamp": 1734286823374,
+    "message": "WIP on feature 1",
+    "parents": [
+        {
+            "id": "abcdef0123abcdef4567abcdef8987abcdef6543",
+            "displayId": "abcdef0"
+        }
+    ]
+}
\ No newline at end of file