diff --git a/serde_with/CHANGELOG.md b/serde_with/CHANGELOG.md
index b80861bc..a1e3a391 100644
--- a/serde_with/CHANGELOG.md
+++ b/serde_with/CHANGELOG.md
@@ -7,6 +7,11 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+### Fixed
+
+* Show macro expansion in the docs.rs generated rustdoc.
+    Since macros are used to generate trait implementations, this is useful to understand the exact generated code.
+
 ## [3.14.0] - 2025-06-30
 
 ### Added
diff --git a/serde_with/Cargo.toml b/serde_with/Cargo.toml
index cc41df75..af4270d4 100644
--- a/serde_with/Cargo.toml
+++ b/serde_with/Cargo.toml
@@ -266,10 +266,13 @@ all-features = true
 rustdoc-args = [
     # Enable doc_cfg showing the required features.
     "--cfg=docsrs",
+    "-Zunstable-options",
     # Generate links to definition in rustdoc source code pages
     # https://github.com/rust-lang/rust/pull/84176
-    "-Zunstable-options",
     "--generate-link-to-definition",
+    # Generate buttons to show macro expansions in the rustdoc output.
+    # https://github.com/rust-lang/rust/pull/137229
+    "--generate-macro-expansion",
     # Link to the stable documentation for core/alloc/std/proc_macro even though docs.rs uses nightly.
     # https://github.com/rust-lang/docs.rs/issues/506#issuecomment-2670501688
     "--extern-html-root-url=core=https://doc.rust-lang.org",
diff --git a/serde_with_macros/CHANGELOG.md b/serde_with_macros/CHANGELOG.md
index 00f1b93a..d18add50 100644
--- a/serde_with_macros/CHANGELOG.md
+++ b/serde_with_macros/CHANGELOG.md
@@ -7,6 +7,11 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+### Fixed
+
+* Show macro expansion in the docs.rs generated rustdoc.
+    Since macros are used to generate trait implementations, this is useful to understand the exact generated code.
+
 ## [3.14.0] - 2025-06-30
 
 ### Added
diff --git a/serde_with_macros/Cargo.toml b/serde_with_macros/Cargo.toml
index 3c0c4d28..ff3d3d9d 100644
--- a/serde_with_macros/Cargo.toml
+++ b/serde_with_macros/Cargo.toml
@@ -61,6 +61,23 @@ version-sync = "0.9.1"
 
 [package.metadata.docs.rs]
 all-features = true
+rustdoc-args = [
+    # Enable doc_cfg showing the required features.
+    "--cfg=docsrs",
+    "-Zunstable-options",
+    # Generate links to definition in rustdoc source code pages
+    # https://github.com/rust-lang/rust/pull/84176
+    "--generate-link-to-definition",
+    # Generate buttons to show macro expansions in the rustdoc output.
+    # https://github.com/rust-lang/rust/pull/137229
+    "--generate-macro-expansion",
+    # Link to the stable documentation for core/alloc/std/proc_macro even though docs.rs uses nightly.
+    # https://github.com/rust-lang/docs.rs/issues/506#issuecomment-2670501688
+    "--extern-html-root-url=core=https://doc.rust-lang.org",
+    "--extern-html-root-url=alloc=https://doc.rust-lang.org",
+    "--extern-html-root-url=std=https://doc.rust-lang.org",
+    "--extern-html-root-url=proc_macro=https://doc.rust-lang.org",
+]
 
 [package.metadata.release]
 pre-release-replacements = [