diff --git a/README.md b/README.md
index 702a5c2..4636138 100644
--- a/README.md
+++ b/README.md
@@ -162,7 +162,7 @@ struct ThirdPartyStruct
     int a = 100;
 };
 
-namespace json
+namespace json::ext
 {
 template <>
 class jsonization<ThirdPartyStruct>
@@ -176,7 +176,7 @@ public:
         return true;
     }
 };
-} // namespace json
+} // namespace json::ext
 
 // 然后可以将其用作 JSON
 ThirdPartyStruct third;
diff --git a/README_en.md b/README_en.md
index c3a71ec..0760ec4 100644
--- a/README_en.md
+++ b/README_en.md
@@ -162,7 +162,7 @@ struct ThirdPartyStruct
     int a = 100;
 };
 
-namespace json
+namespace json::ext
 {
 template <>
 class jsonization<ThirdPartyStruct>
@@ -176,7 +176,7 @@ public:
         return true;
     }
 };
-} // namespace json
+} // namespace json::ext
 
 // then we can use it as json
 ThirdPartyStruct third;