diff --git a/src/cares_wrap.cc b/src/cares_wrap.cc
index bdbbd1a46099cc..4a9c6f7a9cddca 100644
--- a/src/cares_wrap.cc
+++ b/src/cares_wrap.cc
@@ -36,7 +36,6 @@ namespace cares_wrap {
 using v8::Array;
 using v8::Context;
 using v8::EscapableHandleScope;
-using v8::Function;
 using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
 using v8::HandleScope;
diff --git a/src/debug-agent.cc b/src/debug-agent.cc
index 920f42e77eaee8..14ac382ada07c3 100644
--- a/src/debug-agent.cc
+++ b/src/debug-agent.cc
@@ -36,7 +36,6 @@ namespace node {
 namespace debugger {
 
 using v8::Context;
-using v8::Function;
 using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
 using v8::HandleScope;
diff --git a/src/env.cc b/src/env.cc
index 2598e775e8e240..8efe13816c0ee9 100644
--- a/src/env.cc
+++ b/src/env.cc
@@ -21,7 +21,6 @@ using v8::Local;
 using v8::Message;
 using v8::StackFrame;
 using v8::StackTrace;
-using v8::Value;
 
 void Environment::Start(int argc,
                         const char* const* argv,
diff --git a/src/inspector_agent.cc b/src/inspector_agent.cc
index 55ee1810752494..5a870aa91ca0f4 100644
--- a/src/inspector_agent.cc
+++ b/src/inspector_agent.cc
@@ -155,7 +155,6 @@ bool RespondToGet(inspector_socket_t* socket, const std::string& path,
 
 namespace inspector {
 
-using blink::protocol::DictionaryValue;
 
 class AgentImpl {
  public:
diff --git a/src/node.cc b/src/node.cc
index fce103ecb2cc4a..dbc2478448352e 100644
--- a/src/node.cc
+++ b/src/node.cc
@@ -125,7 +125,6 @@ using v8::ScriptOrigin;
 using v8::SealHandleScope;
 using v8::String;
 using v8::TryCatch;
-using v8::Uint32;
 using v8::Uint32Array;
 using v8::V8;
 using v8::Value;
diff --git a/src/node_buffer.cc b/src/node_buffer.cc
index d86968ebabf398..388ee6b5692a93 100644
--- a/src/node_buffer.cc
+++ b/src/node_buffer.cc
@@ -95,19 +95,15 @@ using v8::ArrayBuffer;
 using v8::ArrayBufferCreationMode;
 using v8::Context;
 using v8::EscapableHandleScope;
-using v8::Function;
 using v8::FunctionCallbackInfo;
-using v8::HandleScope;
 using v8::Integer;
 using v8::Isolate;
 using v8::Local;
 using v8::Maybe;
 using v8::MaybeLocal;
-using v8::Number;
 using v8::Object;
 using v8::Persistent;
 using v8::String;
-using v8::Uint32;
 using v8::Uint32Array;
 using v8::Uint8Array;
 using v8::Value;
diff --git a/src/node_contextify.cc b/src/node_contextify.cc
index 95911be7e708e6..091b2a5ee3f711 100644
--- a/src/node_contextify.cc
+++ b/src/node_contextify.cc
@@ -23,7 +23,6 @@ using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
 using v8::HandleScope;
 using v8::Integer;
-using v8::Isolate;
 using v8::Local;
 using v8::Maybe;
 using v8::MaybeLocal;
@@ -41,7 +40,6 @@ using v8::String;
 using v8::TryCatch;
 using v8::Uint8Array;
 using v8::UnboundScript;
-using v8::V8;
 using v8::Value;
 using v8::WeakCallbackInfo;
 
diff --git a/src/node_crypto.cc b/src/node_crypto.cc
index 2b85d1a60980dd..9cf216f2d60440 100644
--- a/src/node_crypto.cc
+++ b/src/node_crypto.cc
@@ -83,7 +83,6 @@ using v8::PropertyAttribute;
 using v8::PropertyCallbackInfo;
 using v8::ReadOnly;
 using v8::String;
-using v8::V8;
 using v8::Value;
 
 
diff --git a/src/node_dtrace.cc b/src/node_dtrace.cc
index 378d8f6b7db2e4..e42c20877df126 100644
--- a/src/node_dtrace.cc
+++ b/src/node_dtrace.cc
@@ -32,7 +32,6 @@
 namespace node {
 
 using v8::FunctionCallbackInfo;
-using v8::FunctionTemplate;
 using v8::GCCallbackFlags;
 using v8::GCType;
 using v8::HandleScope;
diff --git a/src/node_file.cc b/src/node_file.cc
index 1fdef68ca6129b..77d11756a2dbe5 100644
--- a/src/node_file.cc
+++ b/src/node_file.cc
@@ -34,7 +34,6 @@ using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
 using v8::HandleScope;
 using v8::Integer;
-using v8::Isolate;
 using v8::Local;
 using v8::Number;
 using v8::Object;
diff --git a/src/node_v8.cc b/src/node_v8.cc
index 04da61677dc26d..43dd86c7574b4b 100644
--- a/src/node_v8.cc
+++ b/src/node_v8.cc
@@ -10,7 +10,6 @@ namespace node {
 using v8::Array;
 using v8::ArrayBuffer;
 using v8::Context;
-using v8::Function;
 using v8::FunctionCallbackInfo;
 using v8::HeapSpaceStatistics;
 using v8::HeapStatistics;
diff --git a/src/node_zlib.cc b/src/node_zlib.cc
index a2acec49c7d96a..09910e79eb35a9 100644
--- a/src/node_zlib.cc
+++ b/src/node_zlib.cc
@@ -27,7 +27,6 @@ using v8::Integer;
 using v8::Local;
 using v8::Number;
 using v8::Object;
-using v8::String;
 using v8::Value;
 
 enum node_zlib_mode {
diff --git a/src/pipe_wrap.cc b/src/pipe_wrap.cc
index e013811687f9d9..8590a0dc9e07cd 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::String;
 using v8::Value;
 
 
diff --git a/src/process_wrap.cc b/src/process_wrap.cc
index d574bf22965407..3dcde0962af080 100644
--- a/src/process_wrap.cc
+++ b/src/process_wrap.cc
@@ -12,7 +12,6 @@ namespace node {
 
 using v8::Array;
 using v8::Context;
-using v8::Function;
 using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
 using v8::HandleScope;
diff --git a/src/signal_wrap.cc b/src/signal_wrap.cc
index 280c9e3eb91779..582d1a9ecfdc02 100644
--- a/src/signal_wrap.cc
+++ b/src/signal_wrap.cc
@@ -10,7 +10,6 @@
 namespace node {
 
 using v8::Context;
-using v8::Function;
 using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
 using v8::HandleScope;
diff --git a/src/stream_wrap.cc b/src/stream_wrap.cc
index f3f1d3bfdf6f7f..17278ff83aaf54 100644
--- a/src/stream_wrap.cc
+++ b/src/stream_wrap.cc
@@ -30,7 +30,6 @@ using v8::HandleScope;
 using v8::Integer;
 using v8::Local;
 using v8::Object;
-using v8::True;
 using v8::Value;
 
 
diff --git a/src/timer_wrap.cc b/src/timer_wrap.cc
index 7f6c0029bf333d..f3267e9448527a 100644
--- a/src/timer_wrap.cc
+++ b/src/timer_wrap.cc
@@ -11,7 +11,6 @@
 namespace node {
 
 using v8::Context;
-using v8::Function;
 using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
 using v8::HandleScope;
diff --git a/src/tls_wrap.cc b/src/tls_wrap.cc
index ceb3536cd25ce1..7c5df1105a69c3 100644
--- a/src/tls_wrap.cc
+++ b/src/tls_wrap.cc
@@ -17,7 +17,6 @@ namespace node {
 
 using crypto::SecureContext;
 using crypto::SSLWrap;
-using v8::Boolean;
 using v8::Context;
 using v8::EscapableHandleScope;
 using v8::Exception;
diff --git a/src/tty_wrap.cc b/src/tty_wrap.cc
index 319a74fd368eae..26f061b99b34e8 100644
--- a/src/tty_wrap.cc
+++ b/src/tty_wrap.cc
@@ -15,13 +15,11 @@ namespace node {
 
 using v8::Array;
 using v8::Context;
-using v8::Function;
 using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
 using v8::Integer;
 using v8::Local;
 using v8::Object;
-using v8::String;
 using v8::Value;
 
 
diff --git a/src/udp_wrap.cc b/src/udp_wrap.cc
index a0d8b1f7613b61..1cf9678cb185d4 100644
--- a/src/udp_wrap.cc
+++ b/src/udp_wrap.cc
@@ -17,7 +17,6 @@ using v8::Array;
 using v8::Context;
 using v8::EscapableHandleScope;
 using v8::External;
-using v8::Function;
 using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
 using v8::HandleScope;
@@ -27,7 +26,6 @@ using v8::Object;
 using v8::PropertyAttribute;
 using v8::PropertyCallbackInfo;
 using v8::String;
-using v8::Uint32;
 using v8::Undefined;
 using v8::Value;
 
diff --git a/src/uv.cc b/src/uv.cc
index 21520f5cb8783c..c0e742bf159d98 100644
--- a/src/uv.cc
+++ b/src/uv.cc
@@ -8,11 +8,9 @@ namespace uv {
 
 using v8::Context;
 using v8::FunctionCallbackInfo;
-using v8::FunctionTemplate;
 using v8::Integer;
 using v8::Local;
 using v8::Object;
-using v8::String;
 using v8::Value;