diff --git a/lib/yarp.rb b/lib/yarp.rb
index b761d2e4a5..97b8bd9ade 100644
--- a/lib/yarp.rb
+++ b/lib/yarp.rb
@@ -481,6 +481,8 @@ module YARP
           locals << []
         when PostExecutionNode
           locals.push([], [])
+        when InterpolatedRegularExpressionNode
+          locals << [] if node.once?
         end
 
         stack.concat(node.child_nodes.compact)
diff --git a/test/yarp/fixtures/regex.txt b/test/yarp/fixtures/regex.txt
index fe7b848b1b..1e917e7de7 100644
--- a/test/yarp/fixtures/regex.txt
+++ b/test/yarp/fixtures/regex.txt
@@ -26,3 +26,5 @@ foo /bar/
 /(?#\))/ =~ "hi"
 
 %r#pound#
+
+/aaa #{bbb}/o
diff --git a/test/yarp/snapshots/regex.txt b/test/yarp/snapshots/regex.txt
index 67d7ab0480..6ba394271a 100644
--- a/test/yarp/snapshots/regex.txt
+++ b/test/yarp/snapshots/regex.txt
@@ -1,6 +1,6 @@
-ProgramNode(0...278)(
+ProgramNode(0...293)(
   [:foo],
-  StatementsNode(0...278)(
+  StatementsNode(0...293)(
     [CallNode(0...9)(
        nil,
        nil,
@@ -138,6 +138,29 @@ ProgramNode(0...278)(
        (277...278),
        "pound",
        0
+     ),
+     InterpolatedRegularExpressionNode(280...293)(
+       (280...281),
+       [StringNode(281...285)(nil, (281...285), nil, "aaa "),
+        EmbeddedStatementsNode(285...291)(
+          (285...287),
+          StatementsNode(287...290)(
+            [CallNode(287...290)(
+               nil,
+               nil,
+               (287...290),
+               nil,
+               nil,
+               nil,
+               nil,
+               2,
+               "bbb"
+             )]
+          ),
+          (290...291)
+        )],
+       (291...293),
+       128
      )]
   )
 )