diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7730457c..419ca495 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Add `no_cache` for `cache_control` attribute [#1051](https://github.com/async-graphql/async-graphql/issues/1051)
 - Resurrect code generation through tests [#1062](https://github.com/async-graphql/async-graphql/pull/1062)
 - Support for primitive type in CursorType [#1049](https://github.com/async-graphql/async-graphql/pull/1049)
+- Add `SDLExportOptions::include_specified_by` method to enable `specifiedBy` directive [#1065](https://github.com/async-graphql/async-graphql/issues/1065)
 
 # [4.0.12] 2022-08-24
 
diff --git a/src/registry/export_sdl.rs b/src/registry/export_sdl.rs
index 0461d380..2adf2596 100644
--- a/src/registry/export_sdl.rs
+++ b/src/registry/export_sdl.rs
@@ -13,6 +13,7 @@ pub struct SDLExportOptions {
     sorted_enum_values: bool,
     federation: bool,
     prefer_single_line_descriptions: bool,
+    include_specified_by: bool,
 }
 
 impl SDLExportOptions {
@@ -71,6 +72,14 @@ impl SDLExportOptions {
             ..self
         }
     }
+
+    /// Includes `specifiedBy` directive in SDL
+    pub fn include_specified_by(self) -> Self {
+        Self {
+            include_specified_by: true,
+            ..self
+        }
+    }
 }
 
 impl Registry {
@@ -218,13 +227,15 @@ impl Registry {
                     }
                     write!(sdl, "scalar {}", name).ok();
 
-                    if let Some(specified_by_url) = specified_by_url {
-                        write!(
-                            sdl,
-                            " @specifiedBy(url: \"{}\")",
-                            specified_by_url.replace('"', "\\\"")
-                        )
-                        .ok();
+                    if options.include_specified_by {
+                        if let Some(specified_by_url) = specified_by_url {
+                            write!(
+                                sdl,
+                                " @specifiedBy(url: \"{}\")",
+                                specified_by_url.replace('"', "\\\"")
+                            )
+                            .ok();
+                        }
                     }
 
                     if options.federation {