diff --git a/bom.go b/bom.go
index 687aaad..7dd0fa6 100644
--- a/bom.go
+++ b/bom.go
@@ -54,13 +54,19 @@ func (bs BOMService) ExportComponent(ctx context.Context, componentUUID uuid.UUI
 		params["format"] = string(format)
 	}
 
-	req, err := bs.client.newRequest(ctx, http.MethodGet, fmt.Sprintf("api/v1/bom/cyclonedx/component/%s", componentUUID), withParams(params))
+	var acceptContentType string
+	switch format {
+	case BOMFormatJSON:
+		acceptContentType = "application/vnd.cyclonedx+json"
+	case BOMFormatXML:
+		acceptContentType = "application/vnd.cyclonedx+xml"
+	}
+
+	req, err := bs.client.newRequest(ctx, http.MethodGet, fmt.Sprintf("api/v1/bom/cyclonedx/component/%s", componentUUID), withParams(params), withAcceptContentType(acceptContentType))
 	if err != nil {
 		return
 	}
 
-	req.Header.Set("Accept", "application/vnd.cyclonedx+json")
-
 	_, err = bs.client.doRequest(req, &bom)
 	return
 }
@@ -74,13 +80,19 @@ func (bs BOMService) ExportProject(ctx context.Context, projectUUID uuid.UUID, f
 		params["variant"] = string(variant)
 	}
 
-	req, err := bs.client.newRequest(ctx, http.MethodGet, fmt.Sprintf("api/v1/bom/cyclonedx/project/%s", projectUUID), withParams(params))
+	var acceptContentType string
+	switch format {
+	case BOMFormatJSON:
+		acceptContentType = "application/vnd.cyclonedx+json"
+	case BOMFormatXML:
+		acceptContentType = "application/vnd.cyclonedx+xml"
+	}
+
+	req, err := bs.client.newRequest(ctx, http.MethodGet, fmt.Sprintf("api/v1/bom/cyclonedx/project/%s", projectUUID), withParams(params), withAcceptContentType(acceptContentType))
 	if err != nil {
 		return
 	}
 
-	req.Header.Set("Accept", "application/vnd.cyclonedx+json")
-
 	_, err = bs.client.doRequest(req, &bom)
 	return
 }
diff --git a/client.go b/client.go
index 7e6a346..3a12121 100644
--- a/client.go
+++ b/client.go
@@ -350,8 +350,15 @@ func (c Client) doRequest(req *http.Request, v interface{}) (a apiResponse, err
 	}
 
 	if v != nil {
+		contentType := res.Header.Get("Content-Type")
+		contentType = strings.SplitN(contentType, ";", 2)[0]
 		switch vt := v.(type) {
 		case *string:
+			expectedContentTypes := []string{"text/plain", "application/vnd.cyclonedx+json", "application/vnd.cyclonedx+xml"}
+			if !sliceContains(expectedContentTypes, contentType) {
+				err = fmt.Errorf("expected %s content-type, but received %s", strings.Join(expectedContentTypes, ", "), contentType)
+				return
+			}
 			if content, readErr := io.ReadAll(res.Body); readErr == nil {
 				*vt = strings.TrimSpace(string(content))
 			} else {
@@ -359,6 +366,10 @@ func (c Client) doRequest(req *http.Request, v interface{}) (a apiResponse, err
 				return
 			}
 		default:
+			if contentType != "application/json" {
+				err = fmt.Errorf("expected application/json content-type, but received %s", contentType)
+				return
+			}
 			err = json.NewDecoder(res.Body).Decode(v)
 			if err != nil {
 				return
diff --git a/user.go b/user.go
index d9ee07b..142f2a4 100644
--- a/user.go
+++ b/user.go
@@ -50,13 +50,11 @@ func (us UserService) Login(ctx context.Context, username, password string) (tok
 	body.Set("username", username)
 	body.Set("password", password)
 
-	req, err := us.client.newRequest(ctx, http.MethodPost, "api/v1/user/login", withBody(body))
+	req, err := us.client.newRequest(ctx, http.MethodPost, "api/v1/user/login", withBody(body), withAcceptContentType("text/plain"))
 	if err != nil {
 		return
 	}
 
-	req.Header.Set("Accept", "*/*")
-
 	_, err = us.client.doRequest(req, &token)
 	return
 }
@@ -73,13 +71,11 @@ func (us UserService) ForceChangePassword(ctx context.Context, username, passwor
 	body.Set("newPassword", newPassword)
 	body.Set("confirmPassword", newPassword)
 
-	req, err := us.client.newRequest(ctx, http.MethodPost, "api/v1/user/forceChangePassword", withBody(body))
+	req, err := us.client.newRequest(ctx, http.MethodPost, "api/v1/user/forceChangePassword", withBody(body), withAcceptContentType("text/plain"))
 	if err != nil {
 		return
 	}
 
-	req.Header.Set("Accept", "*/*")
-
 	_, err = us.client.doRequest(req, nil)
 	return
 }
diff --git a/util.go b/util.go
index 50afb77..6576038 100644
--- a/util.go
+++ b/util.go
@@ -56,3 +56,13 @@ func OptionalBoolOf(value bool) *bool {
 func OptionalBool() *bool {
 	return nil
 }
+
+func sliceContains[S ~[]E, E comparable](haystack S, needle E) bool {
+	for _, v := range haystack {
+		if v == needle {
+			return true
+		}
+	}
+	return false
+
+}
diff --git a/vex.go b/vex.go
index fa572e0..fe97ad3 100644
--- a/vex.go
+++ b/vex.go
@@ -26,13 +26,11 @@ type vexUploadResponse struct {
 type VEXUploadToken string
 
 func (vs VEXService) ExportCycloneDX(ctx context.Context, projectUUID uuid.UUID) (vex string, err error) {
-	req, err := vs.client.newRequest(ctx, http.MethodGet, fmt.Sprintf("api/v1/vex/cyclonedx/project/%s", projectUUID))
+	req, err := vs.client.newRequest(ctx, http.MethodGet, fmt.Sprintf("api/v1/vex/cyclonedx/project/%s", projectUUID), withAcceptContentType("application/vnd.cyclonedx+json"))
 	if err != nil {
 		return
 	}
 
-	req.Header.Set("Accept", "application/vnd.cyclonedx+json")
-
 	_, err = vs.client.doRequest(req, &vex)
 	return
 }