diff --git a/common.gypi b/common.gypi
index e063139a7d4662..54a8d930c4c062 100644
--- a/common.gypi
+++ b/common.gypi
@@ -39,7 +39,7 @@
 
     # Reset this number to 0 on major V8 upgrades.
     # Increment by one for each non-official patch applied to deps/v8.
-    'v8_embedder_string': '-node.22',
+    'v8_embedder_string': '-node.23',
 
     ##### V8 defaults for Node.js #####
 
diff --git a/deps/v8/src/parsing/parser-base.h b/deps/v8/src/parsing/parser-base.h
index 847774910a94a1..b12a27142c22a7 100644
--- a/deps/v8/src/parsing/parser-base.h
+++ b/deps/v8/src/parsing/parser-base.h
@@ -4108,6 +4108,7 @@ void ParserBase<Impl>::ParseFunctionBody(
       inner_body.Rewind();
       inner_body.Add(inner_block);
       inner_block->set_scope(inner_scope);
+      impl()->RecordBlockSourceRange(inner_block, scope()->end_position());
       if (!impl()->HasCheckedSyntax()) {
         const AstRawString* conflict = inner_scope->FindVariableDeclaredIn(
             function_scope, VariableMode::kLastLexicalVariableMode);
diff --git a/deps/v8/test/mjsunit/code-coverage-block-async.js b/deps/v8/test/mjsunit/code-coverage-block-async.js
index 111be213b6837c..56845aac0127a3 100644
--- a/deps/v8/test/mjsunit/code-coverage-block-async.js
+++ b/deps/v8/test/mjsunit/code-coverage-block-async.js
@@ -119,4 +119,21 @@ new Foo().timeout().next();               // 0400
   {"start":184,"end":302,"count":0},
   {"start":158,"end":182,"count":1}] );
 
+TestCoverage(
+"https://crbug.com/v8/9952",
+`
+async function test(foo) {                // 0000
+  return {bar};                           // 0050
+                                          // 0100
+  function bar() {                        // 0150
+    console.log("test");                  // 0200
+  }                                       // 0250
+}                                         // 0300
+test().then(r => r.bar());                // 0350
+%PerformMicrotaskCheckpoint();            // 0400`,
+[{"start":0,"end":449,"count":1},
+ {"start":0,"end":301,"count":1},
+ {"start":152,"end":253,"count":1},
+ {"start":362,"end":374,"count":1}]);
+
 %DebugToggleBlockCoverage(false);
diff --git a/deps/v8/test/mjsunit/code-coverage-block.js b/deps/v8/test/mjsunit/code-coverage-block.js
index 6cf81bcce0a311..4b9221604ad8d0 100644
--- a/deps/v8/test/mjsunit/code-coverage-block.js
+++ b/deps/v8/test/mjsunit/code-coverage-block.js
@@ -1083,4 +1083,33 @@ TestCoverage(
  {"start":16,"end":33,"count":0}]
 );
 
+TestCoverage(
+"https://crbug.com/v8/9952",
+`
+function test(foo = "foodef") {           // 0000
+  return {bar};                           // 0050
+                                          // 0100
+  function bar() {                        // 0150
+    console.log("test");                  // 0200
+  }                                       // 0250
+}                                         // 0300
+test().bar();                             // 0350`,
+[{"start":0,"end":399,"count":1},
+ {"start":0,"end":301,"count":1},
+ {"start":152,"end":253,"count":1}]);
+
+TestCoverage(
+"https://crbug.com/v8/9952",
+`
+function test(foo = (()=>{})) {           // 0000
+  return {foo};                           // 0050
+}                                         // 0100
+                                          // 0150
+test(()=>{}).foo();                       // 0200`,
+[{"start":0,"end":249,"count":1},
+ {"start":0,"end":101,"count":1},
+ {"start":21,"end":27,"count":0},
+ {"start":205,"end":211,"count":1}]
+);
+
 %DebugToggleBlockCoverage(false);