diff --git a/src/async-wrap.cc b/src/async-wrap.cc
index 8129500a922..79631b1ec14 100644
--- a/src/async-wrap.cc
+++ b/src/async-wrap.cc
@@ -8,7 +8,6 @@
 #include "v8.h"
 #include "v8-profiler.h"
 
-using v8::Array;
 using v8::Boolean;
 using v8::Context;
 using v8::Function;
diff --git a/src/env.cc b/src/env.cc
index ea0ab51cfe9..12be4866aac 100644
--- a/src/env.cc
+++ b/src/env.cc
@@ -17,7 +17,6 @@ using v8::Local;
 using v8::Message;
 using v8::StackFrame;
 using v8::StackTrace;
-using v8::TryCatch;
 using v8::Value;
 
 void Environment::PrintSyncTrace() const {
diff --git a/src/handle_wrap.cc b/src/handle_wrap.cc
index 41c42caa3cc..7a7ce8ae262 100644
--- a/src/handle_wrap.cc
+++ b/src/handle_wrap.cc
@@ -9,7 +9,6 @@
 
 namespace node {
 
-using v8::Boolean;
 using v8::Context;
 using v8::FunctionCallbackInfo;
 using v8::HandleScope;
diff --git a/src/node.cc b/src/node.cc
index e7836fe0a6b..2cfb2866b89 100644
--- a/src/node.cc
+++ b/src/node.cc
@@ -127,8 +127,6 @@ using v8::PromiseRejectMessage;
 using v8::PropertyCallbackInfo;
 using v8::ScriptOrigin;
 using v8::SealHandleScope;
-using v8::StackFrame;
-using v8::StackTrace;
 using v8::String;
 using v8::TryCatch;
 using v8::Uint32;
diff --git a/src/node_buffer.cc b/src/node_buffer.cc
index 322cc5f57ce..ea62dc92943 100644
--- a/src/node_buffer.cc
+++ b/src/node_buffer.cc
@@ -71,7 +71,6 @@ using v8::Context;
 using v8::EscapableHandleScope;
 using v8::Function;
 using v8::FunctionCallbackInfo;
-using v8::FunctionTemplate;
 using v8::HandleScope;
 using v8::Integer;
 using v8::Isolate;
diff --git a/src/node_config.cc b/src/node_config.cc
index 408f1d20a3e..84917397744 100644
--- a/src/node_config.cc
+++ b/src/node_config.cc
@@ -11,8 +11,8 @@ namespace node {
 using v8::Context;
 using v8::Local;
 using v8::Object;
-using v8::Value;
 using v8::ReadOnly;
+using v8::Value;
 
 // The config binding is used to provide an internal view of compile or runtime
 // config options that are required internally by lib/*.js code. This is an
diff --git a/src/node_contextify.cc b/src/node_contextify.cc
index 6586f79bfed..db83660308c 100644
--- a/src/node_contextify.cc
+++ b/src/node_contextify.cc
@@ -11,7 +11,6 @@
 
 namespace node {
 
-using v8::AccessType;
 using v8::Array;
 using v8::ArrayBuffer;
 using v8::Boolean;
@@ -30,7 +29,6 @@ using v8::Maybe;
 using v8::MaybeLocal;
 using v8::Name;
 using v8::NamedPropertyHandlerConfiguration;
-using v8::None;
 using v8::Object;
 using v8::ObjectTemplate;
 using v8::Persistent;
diff --git a/src/node_v8.cc b/src/node_v8.cc
index a1122e57f13..04da61677dc 100644
--- a/src/node_v8.cc
+++ b/src/node_v8.cc
@@ -20,7 +20,6 @@ using v8::NewStringType;
 using v8::Object;
 using v8::String;
 using v8::Uint32;
-using v8::Uint32Array;
 using v8::V8;
 using v8::Value;
 
diff --git a/src/node_watchdog.cc b/src/node_watchdog.cc
index ac9f304926b..dfa7debd9a7 100644
--- a/src/node_watchdog.cc
+++ b/src/node_watchdog.cc
@@ -4,9 +4,6 @@
 
 namespace node {
 
-using v8::V8;
-
-
 Watchdog::Watchdog(v8::Isolate* isolate, uint64_t ms) : isolate_(isolate),
                                                         destroyed_(false) {
   int rc;
diff --git a/src/pipe_wrap.cc b/src/pipe_wrap.cc
index ec6ef32b08a..25080041c27 100644
--- a/src/pipe_wrap.cc
+++ b/src/pipe_wrap.cc
@@ -26,7 +26,6 @@ using v8::HandleScope;
 using v8::Integer;
 using v8::Local;
 using v8::Object;
-using v8::PropertyAttribute;
 using v8::String;
 using v8::Undefined;
 using v8::Value;
diff --git a/src/stream_wrap.cc b/src/stream_wrap.cc
index e6236a6e529..695e917e027 100644
--- a/src/stream_wrap.cc
+++ b/src/stream_wrap.cc
@@ -22,7 +22,6 @@
 
 namespace node {
 
-using v8::Array;
 using v8::Context;
 using v8::EscapableHandleScope;
 using v8::FunctionCallbackInfo;
@@ -30,12 +29,8 @@ using v8::FunctionTemplate;
 using v8::HandleScope;
 using v8::Integer;
 using v8::Local;
-using v8::Number;
 using v8::Object;
-using v8::PropertyCallbackInfo;
-using v8::String;
 using v8::True;
-using v8::Undefined;
 using v8::Value;
 
 
diff --git a/src/string_bytes.cc b/src/string_bytes.cc
index b8d7d3b42f1..5bd3a21176a 100644
--- a/src/string_bytes.cc
+++ b/src/string_bytes.cc
@@ -19,10 +19,10 @@ using v8::EscapableHandleScope;
 using v8::HandleScope;
 using v8::Isolate;
 using v8::Local;
+using v8::MaybeLocal;
 using v8::Object;
 using v8::String;
 using v8::Value;
-using v8::MaybeLocal;
 
 template <typename ResourceType, typename TypeName>
 class ExternString: public ResourceType {
diff --git a/src/tcp_wrap.cc b/src/tcp_wrap.cc
index 4bfe9dd0d83..4e8617af2d0 100644
--- a/src/tcp_wrap.cc
+++ b/src/tcp_wrap.cc
@@ -27,7 +27,6 @@ using v8::HandleScope;
 using v8::Integer;
 using v8::Local;
 using v8::Object;
-using v8::PropertyAttribute;
 using v8::String;
 using v8::Undefined;
 using v8::Value;
diff --git a/src/tls_wrap.cc b/src/tls_wrap.cc
index ba8f760194d..d4214ed7c3e 100644
--- a/src/tls_wrap.cc
+++ b/src/tls_wrap.cc
@@ -15,8 +15,8 @@
 
 namespace node {
 
-using crypto::SSLWrap;
 using crypto::SecureContext;
+using crypto::SSLWrap;
 using v8::Boolean;
 using v8::Context;
 using v8::EscapableHandleScope;
@@ -24,9 +24,7 @@ using v8::Exception;
 using v8::Function;
 using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
-using v8::Integer;
 using v8::Local;
-using v8::Null;
 using v8::Object;
 using v8::String;
 using v8::Value;
diff --git a/src/tty_wrap.cc b/src/tty_wrap.cc
index 567a504276a..5a1d333c3d2 100644
--- a/src/tty_wrap.cc
+++ b/src/tty_wrap.cc
@@ -21,7 +21,6 @@ using v8::FunctionTemplate;
 using v8::Integer;
 using v8::Local;
 using v8::Object;
-using v8::PropertyAttribute;
 using v8::String;
 using v8::Value;
 
diff --git a/src/util.cc b/src/util.cc
index 20325d0bedb..0de8321e3f5 100644
--- a/src/util.cc
+++ b/src/util.cc
@@ -6,8 +6,8 @@
 namespace node {
 
 using v8::Isolate;
-using v8::String;
 using v8::Local;
+using v8::String;
 using v8::Value;
 
 static int MakeUtf8String(Isolate* isolate,
diff --git a/src/uv.cc b/src/uv.cc
index d03e7750083..21520f5cb87 100644
--- a/src/uv.cc
+++ b/src/uv.cc
@@ -9,8 +9,8 @@ namespace uv {
 using v8::Context;
 using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
-using v8::Local;
 using v8::Integer;
+using v8::Local;
 using v8::Object;
 using v8::String;
 using v8::Value;