diff --git a/patches/backport.PR4777.for.N4.patch b/patches/backport.PR4777.for.N4.patch
index 3d95040..d98ac4c 100644
--- a/patches/backport.PR4777.for.N4.patch
+++ b/patches/backport.PR4777.for.N4.patch
@@ -40,10 +40,18 @@ index 7b6ffc8..5c99f80 100644
    V(readable_string, "readable")                                              \
    V(received_shutdown_string, "receivedShutdown")                             \
 diff --git a/src/node_contextify.cc b/src/node_contextify.cc
-index 7404bbb..8cd1293 100644
+index 7404bbb..ecf9444 100644
 --- a/src/node_contextify.cc
 +++ b/src/node_contextify.cc
-@@ -11,10 +11,11 @@
+@@ -1,6 +1,7 @@
+ #include "node.h"
++#include "node_buffer.h"
+ #include "node_internals.h"
+ #include "node_watchdog.h"
+ #include "base-object.h"
+ #include "base-object-inl.h"
+ #include "env.h"
+@@ -11,10 +12,11 @@
  
  namespace node {
  
@@ -55,7 +63,7 @@ index 7404bbb..8cd1293 100644
  using v8::Debug;
  using v8::EscapableHandleScope;
  using v8::External;
-@@ -474,28 +475,60 @@ class ContextifyScript : public BaseObject {
+@@ -474,28 +476,61 @@ class ContextifyScript : public BaseObject {
      Local<String> code = args[0]->ToString(env->isolate());
      Local<String> filename = GetFilenameArg(args, 1);
      Local<Integer> lineOffset = GetLineOffsetArg(args, 1);
@@ -70,9 +78,10 @@ index 7404bbb..8cd1293 100644
  
 +    ScriptCompiler::CachedData* cached_data = nullptr;
 +    if (!cached_data_buf.IsEmpty()) {
++      auto cached_data_local = cached_data_buf.ToLocalChecked();
 +      cached_data = new ScriptCompiler::CachedData(
-+          reinterpret_cast<uint8_t*>(Buffer::Data(cached_data_buf)),
-+          Buffer::Length(cached_data_buf));
++          reinterpret_cast<uint8_t*>(Buffer::Data(cached_data_local)),
++          Buffer::Length(cached_data_local));
 +    }
 +
      ScriptOrigin origin(filename, lineOffset, columnOffset);
@@ -119,7 +128,7 @@ index 7404bbb..8cd1293 100644
  
    static bool InstanceOf(Environment* env, const Local<Value>& value) {
      return !value.IsEmpty() &&
-@@ -644,10 +677,47 @@ class ContextifyScript : public BaseObject {
+@@ -644,10 +679,47 @@ class ContextifyScript : public BaseObject {
        return defaultFilename;
      return value->ToString(args.GetIsolate());
    }
diff --git a/patches/backport.PR5159.for.N4.patch b/patches/backport.PR5159.for.N4.patch
index 98cc0ce..a932839 100644
--- a/patches/backport.PR5159.for.N4.patch
+++ b/patches/backport.PR5159.for.N4.patch
@@ -7,10 +7,10 @@ PR-URL: https://github.com/nodejs/node/pull/5159
 Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
 
 diff --git a/src/node_contextify.cc b/src/node_contextify.cc
-index 8cd1293..23b938a 100644
+index ecf9444..8769b53 100644
 --- a/src/node_contextify.cc
 +++ b/src/node_contextify.cc
-@@ -499,11 +499,11 @@ class ContextifyScript : public BaseObject {
+@@ -501,11 +501,11 @@ class ContextifyScript : public BaseObject {
      if (source.GetCachedData() != nullptr)
        compile_options = ScriptCompiler::kConsumeCodeCache;
      else if (produce_cached_data)
@@ -23,7 +23,7 @@ index 8cd1293..23b938a 100644
          compile_options);
  
      if (v8_script.IsEmpty()) {
-@@ -511,11 +511,12 @@ class ContextifyScript : public BaseObject {
+@@ -513,11 +513,12 @@ class ContextifyScript : public BaseObject {
          AppendExceptionLine(env, try_catch.Exception(), try_catch.Message());
        }
        try_catch.ReThrow();
diff --git a/patches/backport.PR5343.for.N4.patch b/patches/backport.PR5343.for.N4.patch
index 9c2868f..4f973d2 100644
--- a/patches/backport.PR5343.for.N4.patch
+++ b/patches/backport.PR5343.for.N4.patch
@@ -29,10 +29,10 @@ index 5c99f80..c0b6dcd 100644
    V(oncertcb_string, "oncertcb")                                              \
    V(onclose_string, "_onclose")                                               \
 diff --git a/src/node_contextify.cc b/src/node_contextify.cc
-index 23b938a..5d312b7 100644
+index 8769b53..4f63c20 100644
 --- a/src/node_contextify.cc
 +++ b/src/node_contextify.cc
-@@ -520,15 +520,21 @@ class ContextifyScript : public BaseObject {
+@@ -522,15 +522,21 @@ class ContextifyScript : public BaseObject {
        args.This()->Set(
            env->cached_data_rejected_string(),
            Boolean::New(env->isolate(), source.GetCachedData()->rejected));
diff --git a/patches/node.v4.5.0.patch b/patches/node.v4.5.0.patch
index 8b9ab27..fc23b70 100644
--- a/patches/node.v4.5.0.patch
+++ b/patches/node.v4.5.0.patch
@@ -259,7 +259,7 @@
        process.nextTick(function() {
 --- node/src/node_contextify.cc
 +++ node/src/node_contextify.cc
-@@ -477,10 +477,11 @@
+@@ -478,10 +478,11 @@
      Local<Integer> lineOffset = GetLineOffsetArg(args, 1);
      Local<Integer> columnOffset = GetColumnOffsetArg(args, 1);
      bool display_errors = GetDisplayErrorsArg(args, 1);
@@ -271,7 +271,7 @@
        return;
      }
  
-@@ -499,22 +500,37 @@
+@@ -501,22 +502,37 @@
      if (source.GetCachedData() != nullptr)
        compile_options = ScriptCompiler::kConsumeCodeCache;
      else if (produce_cached_data)
@@ -309,7 +309,7 @@
  
      if (compile_options == ScriptCompiler::kConsumeCodeCache) {
        args.This()->Set(
-@@ -721,10 +737,24 @@
+@@ -723,10 +739,24 @@
  
      return value->IsTrue();
    }