diff --git a/kong/mcp/ai-mcp-proxy.yaml b/kong/mcp/ai-mcp-proxy.yaml
index 7c0fb3e..99a0ffa 100644
--- a/kong/mcp/ai-mcp-proxy.yaml
+++ b/kong/mcp/ai-mcp-proxy.yaml
@@ -58,13 +58,15 @@ config:
                   type: integer
                   example: 123
                 next:
-                  type: string
-                  nullable: true
+                  type:
+                  - string
+                  - 'null'
                   format: uri
                   example: http://api.example.org/accounts/?page=4
                 previous:
-                  type: string
-                  nullable: true
+                  type:
+                  - string
+                  - 'null'
                   format: uri
                   example: http://api.example.org/accounts/?page=2
                 results: