diff --git a/internal/markdown/parser/tagdata/main.go b/internal/markdown/parser/tagdata/main.go
index f180494e..73457329 100644
--- a/internal/markdown/parser/tagdata/main.go
+++ b/internal/markdown/parser/tagdata/main.go
@@ -206,7 +206,7 @@ func parseFullyQualifiedEmoji(data []byte) ([]string, int) {
 			continue
 		}
 		var sequence strings.Builder
-		for _, field := range strings.Fields(fields[0]) {
+		for field := range strings.FieldsSeq(fields[0]) {
 			sequence.WriteRune(parseCodePoint(field))
 		}
 		emoji := sequence.String()
diff --git a/server/router/api/v1/auth_service_client_info_test.go b/server/router/api/v1/auth_service_client_info_test.go
index 682fd7f5..19fccf28 100644
--- a/server/router/api/v1/auth_service_client_info_test.go
+++ b/server/router/api/v1/auth_service_client_info_test.go
@@ -219,7 +219,7 @@ func testCookieExpiry() time.Time {
 }
 
 func containsCookieAttribute(cookie, attr string) bool {
-	for _, part := range strings.Split(cookie, ";") {
+	for part := range strings.SplitSeq(cookie, ";") {
 		if strings.EqualFold(strings.TrimSpace(part), attr) {
 			return true
 		}
diff --git a/server/router/api/v1/auth_service_session.go b/server/router/api/v1/auth_service_session.go
index 57f75f47..e41c33ca 100644
--- a/server/router/api/v1/auth_service_session.go
+++ b/server/router/api/v1/auth_service_session.go
@@ -198,7 +198,7 @@ func isSecureRequest(ctx context.Context) bool {
 	}
 
 	for _, value := range md.Get("x-forwarded-proto") {
-		for _, proto := range strings.Split(value, ",") {
+		for proto := range strings.SplitSeq(value, ",") {
 			if strings.EqualFold(strings.TrimSpace(proto), "https") {
 				return true
 			}
diff --git a/server/router/api/v1/gateway_route_resolver_test.go b/server/router/api/v1/gateway_route_resolver_test.go
index 2eed8cda..05cf7120 100644
--- a/server/router/api/v1/gateway_route_resolver_test.go
+++ b/server/router/api/v1/gateway_route_resolver_test.go
@@ -306,7 +306,7 @@ func synthesizeGatewayVariable(segment string) []string {
 	}
 
 	var built []string
-	for _, part := range strings.Split(subtemplate, "/") {
+	for part := range strings.SplitSeq(subtemplate, "/") {
 		switch part {
 		case "*":
 			built = append(built, "one")