diff --git a/internal/api/client.go b/internal/api/client.go
index ec0aeba..d269e5a 100644
--- a/internal/api/client.go
+++ b/internal/api/client.go
@@ -849,7 +849,7 @@ func (c *Client) ListIncidentsCLI(ctx context.Context, page, pageSize int, sort
 		return nil, fmt.Errorf("failed to create request: %w", err)
 	}
 	req.Header.Set("Authorization", "Bearer "+c.apiKey)
-	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("Content-Type", "application/vnd.api+json")
 
 	httpResp, err := c.httpClient.Do(req)
 	if err != nil {
@@ -941,7 +941,7 @@ func (c *Client) GetIncidentByID(ctx context.Context, id string) (*Incident, err
 		return nil, fmt.Errorf("failed to create request: %w", err)
 	}
 	req.Header.Set("Authorization", "Bearer "+c.apiKey)
-	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("Content-Type", "application/vnd.api+json")
 
 	httpResp, err := c.httpClient.Do(req)
 	if err != nil {
@@ -1279,7 +1279,7 @@ func (c *Client) ListAlertsCLI(ctx context.Context, page, pageSize int, sort str
 		return nil, fmt.Errorf("failed to create request: %w", err)
 	}
 	req.Header.Set("Authorization", "Bearer "+c.apiKey)
-	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("Content-Type", "application/vnd.api+json")
 
 	httpResp, err := c.httpClient.Do(req)
 	if err != nil {
@@ -1371,7 +1371,7 @@ func (c *Client) GetAlertByID(ctx context.Context, id string) (*Alert, error) {
 		return nil, fmt.Errorf("failed to create request: %w", err)
 	}
 	req.Header.Set("Authorization", "Bearer "+c.apiKey)
-	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("Content-Type", "application/vnd.api+json")
 
 	httpResp, err := c.httpClient.Do(req)
 	if err != nil {
@@ -1866,7 +1866,7 @@ func (c *Client) ListServicesCLI(ctx context.Context, page, pageSize int, sort s
 		return nil, fmt.Errorf("failed to create request: %w", err)
 	}
 	req.Header.Set("Authorization", "Bearer "+c.apiKey)
-	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("Content-Type", "application/vnd.api+json")
 
 	httpResp, err := c.httpClient.Do(req)
 	if err != nil {
@@ -1961,7 +1961,7 @@ func (c *Client) GetServiceByID(ctx context.Context, id string) (*Service, error
 		return nil, fmt.Errorf("failed to create request: %w", err)
 	}
 	req.Header.Set("Authorization", "Bearer "+c.apiKey)
-	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("Content-Type", "application/vnd.api+json")
 
 	httpResp, err := c.httpClient.Do(req)
 	if err != nil {
@@ -2319,7 +2319,7 @@ func (c *Client) ListTeamsCLI(ctx context.Context, page, pageSize int, sort stri
 		return nil, fmt.Errorf("failed to create request: %w", err)
 	}
 	req.Header.Set("Authorization", "Bearer "+c.apiKey)
-	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("Content-Type", "application/vnd.api+json")
 
 	httpResp, err := c.httpClient.Do(req)
 	if err != nil {
@@ -2416,7 +2416,7 @@ func (c *Client) GetTeamByID(ctx context.Context, id string) (*Team, error) {
 		return nil, fmt.Errorf("failed to create request: %w", err)
 	}
 	req.Header.Set("Authorization", "Bearer "+c.apiKey)
-	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("Content-Type", "application/vnd.api+json")
 
 	httpResp, err := c.httpClient.Do(req)
 	if err != nil {
@@ -2810,7 +2810,7 @@ func (c *Client) ListSchedulesCLI(ctx context.Context, page, pageSize int, filte
 		return nil, fmt.Errorf("failed to create request: %w", err)
 	}
 	req.Header.Set("Authorization", "Bearer "+c.apiKey)
-	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("Content-Type", "application/vnd.api+json")
 
 	httpResp, err := c.httpClient.Do(req)
 	if err != nil {
@@ -2911,7 +2911,7 @@ func (c *Client) ListShiftsCLI(ctx context.Context, page, pageSize int, filters
 		return nil, fmt.Errorf("failed to create request: %w", err)
 	}
 	req.Header.Set("Authorization", "Bearer "+c.apiKey)
-	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("Content-Type", "application/vnd.api+json")
 
 	httpResp, err := c.httpClient.Do(req)
 	if err != nil {