diff --git a/core/handlers/ticket_opened_test.go b/core/handlers/ticket_opened_test.go
index cb0c06dec..5f7941857 100644
--- a/core/handlers/ticket_opened_test.go
+++ b/core/handlers/ticket_opened_test.go
@@ -32,10 +32,10 @@ func TestTicketOpened(t *testing.T) {
 				"message": "Queued. Thank you."
 			}`),
 		},
-		"https://nyaruka.zendesk.com/api/v2/users/search?external_id=b699a406-7e44-49be-9f01-1a82893e8a10": {
+		"https://nyaruka.zendesk.com/api/v2/users/search.json?external_id=b699a406-7e44-49be-9f01-1a82893e8a10": {
 			httpx.NewMockResponse(200, nil, `{"users": []}`),
 		},
-		"https://nyaruka.zendesk.com/api/v2/users": {
+		"https://nyaruka.zendesk.com/api/v2/users.json": {
 			httpx.NewMockResponse(201, nil, `{
 				"user": {
 					"id": 9873843,
diff --git a/services/tickets/zendesk/client.go b/services/tickets/zendesk/client.go
index 0c5d3aaac..31e9d274f 100644
--- a/services/tickets/zendesk/client.go
+++ b/services/tickets/zendesk/client.go
@@ -335,7 +335,7 @@ func (c *RESTClient) CreateUser(user *User) (*User, *httpx.Trace, error) {
 		User *User `json:"user"`
 	}{}
 
-	trace, err := c.post("users", payload, response)
+	trace, err := c.post("users.json", payload, response)
 	if err != nil {
 		return nil, trace, err
 	}
@@ -349,7 +349,7 @@ type SearchUserResponse struct {
 
 // SearchUser returns the user with the given external ID or nil if it doesn't exist
 func (c *RESTClient) SearchUser(externalID string) (*User, *httpx.Trace, error) {
-	endpoint := fmt.Sprintf("users/search?external_id=%s", externalID)
+	endpoint := fmt.Sprintf("users/search.json?external_id=%s", externalID)
 	var response SearchUserResponse
 	trace, err := c.get(endpoint, nil, &response)
 	if err != nil {
diff --git a/services/tickets/zendesk/client_test.go b/services/tickets/zendesk/client_test.go
index 2dd46e82a..2391faa99 100644
--- a/services/tickets/zendesk/client_test.go
+++ b/services/tickets/zendesk/client_test.go
@@ -271,7 +271,7 @@ func TestPush(t *testing.T) {
 func TestCreateUser(t *testing.T) {
 	defer httpx.SetRequestor(httpx.DefaultRequestor)
 	httpx.SetRequestor(httpx.NewMockRequestor(map[string][]httpx.MockResponse{
-		"https://mocked_subdomain.zendesk.com/api/v2/users": {
+		"https://mocked_subdomain.zendesk.com/api/v2/users.json": {
 			httpx.MockConnectionError,
 			httpx.NewMockResponse(400, nil, `{"description": "Something went wrong", "error": "Unknown"}`),
 			httpx.NewMockResponse(201, nil, `{
@@ -313,7 +313,7 @@ func TestSearchUser(t *testing.T) {
 	userUUID := "9a327960-b2ce-4659-bef7-87cbb837a154"
 
 	httpx.SetRequestor(httpx.NewMockRequestor(map[string][]httpx.MockResponse{
-		fmt.Sprintf("https://mocked_subdomain.zendesk.com/api/v2/users/search?external_id=%s", userUUID): {
+		fmt.Sprintf("https://mocked_subdomain.zendesk.com/api/v2/users/search.json?external_id=%s", userUUID): {
 			httpx.MockConnectionError,
 			httpx.NewMockResponse(400, nil, `{"description": "Something went wrong", "error": "Unknown"}`),
 			httpx.NewMockResponse(200, nil, `{"users": []}`),
diff --git a/services/tickets/zendesk/service_test.go b/services/tickets/zendesk/service_test.go
index b4ebb2b72..9b775e8cf 100644
--- a/services/tickets/zendesk/service_test.go
+++ b/services/tickets/zendesk/service_test.go
@@ -41,7 +41,7 @@ func TestOpenAndForward(t *testing.T) {
 	uuids.SetGenerator(uuids.NewSeededGenerator(12345))
 	dates.SetNowSource(dates.NewSequentialNowSource(time.Date(2019, 10, 7, 15, 21, 30, 0, time.UTC)))
 	httpx.SetRequestor(httpx.NewMockRequestor(map[string][]httpx.MockResponse{
-		"https://nyaruka.zendesk.com/api/v2/users/search?external_id=5d76d86b-3bb9-4d5a-b822-c9d86f5d8e4f": {
+		"https://nyaruka.zendesk.com/api/v2/users/search.json?external_id=5d76d86b-3bb9-4d5a-b822-c9d86f5d8e4f": {
 			httpx.NewMockResponse(200, nil, `{"users": [{"id": 35241, "name": "Dummy User"}], "count": 1, "next_page": "https://nyaruka.zendesk.com/api/v2/users.json?page=2"}`),
 			httpx.NewMockResponse(200, nil, `{"users": [{"id": 35241, "name": "Dummy User"}], "count": 1, "next_page": "https://nyaruka.zendesk.com/api/v2/users.json?page=2"}`),
 			httpx.NewMockResponse(200, nil, `{"users": [{"id": 35241, "name": "Dummy User"}], "count": 1, "next_page": "https://nyaruka.zendesk.com/api/v2/users.json?page=2"}`),