diff --git a/gems/actionmailer/_reviewers.yaml b/gems/actionmailer/_reviewers.yaml
index 0b4d3b7e8..b28527a0f 100644
--- a/gems/actionmailer/_reviewers.yaml
+++ b/gems/actionmailer/_reviewers.yaml
@@ -1,2 +1,3 @@
 reviewers:
   - ksss
+  - ydah
diff --git a/gems/actionview/_reviewers.yaml b/gems/actionview/_reviewers.yaml
index 0b4d3b7e8..b28527a0f 100644
--- a/gems/actionview/_reviewers.yaml
+++ b/gems/actionview/_reviewers.yaml
@@ -1,2 +1,3 @@
 reviewers:
   - ksss
+  - ydah
diff --git a/gems/activesupport/_reviewers.yaml b/gems/activesupport/_reviewers.yaml
index 3e8b27cf1..cb318ffcd 100644
--- a/gems/activesupport/_reviewers.yaml
+++ b/gems/activesupport/_reviewers.yaml
@@ -1,3 +1,4 @@
 reviewers:
   - hibariya
   - ksss
+  - ydah