diff --git a/common.gypi b/common.gypi
index bdc2c105abeddc..3cfed562577978 100644
--- a/common.gypi
+++ b/common.gypi
@@ -36,7 +36,7 @@
 
     # 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.20',
+    'v8_embedder_string': '-node.21',
 
     ##### V8 defaults for Node.js #####
 
diff --git a/deps/v8/src/codegen/mips64/assembler-mips64.h b/deps/v8/src/codegen/mips64/assembler-mips64.h
index 9f7ffdf8c79055..740bda0d3f83c7 100644
--- a/deps/v8/src/codegen/mips64/assembler-mips64.h
+++ b/deps/v8/src/codegen/mips64/assembler-mips64.h
@@ -71,7 +71,6 @@ class Operand {
       : rm_(no_reg), rmode_(RelocInfo::EXTERNAL_REFERENCE) {
     value_.immediate = static_cast<int64_t>(f.address());
   }
-  V8_INLINE explicit Operand(const char* s);
   explicit Operand(Handle<HeapObject> handle);
   V8_INLINE explicit Operand(Smi value) : rm_(no_reg), rmode_(RelocInfo::NONE) {
     value_.immediate = static_cast<intptr_t>(value.ptr());