diff --git a/third_party/d8/README.google b/third_party/d8/README.google
index 2f3b067e081..f5e801cf5c2 100644
--- a/third_party/d8/README.google
+++ b/third_party/d8/README.google
@@ -1,18 +1,14 @@
 Name: V8 command line javascript shell.
 Short Name: d8
-URL: https://chromium.googlesource.com/v8/v8/+/efdf8385488430cb3fc15a37ca284c4e2ea1b97f
-Version: 6.1.0 (candidate)
-Revision: efdf8385488430cb3fc15a37ca284c4e2ea1b97f
-Date: July 19 2017
+URL: https://chromium.googlesource.com/v8/v8/+/4.4.63.5
+Version: 4.4.63.5
+Revision: 288da5c7788134004a4b34a4ba0cb4814428cf7c
+Date: September 2nd 2014
 License: BSD
 
+
 Description:
-This directory contains hashes of the d8 binaries for Windows, Mac and Linux.
-The files are stored in cloud storage in the bucket dart-dependencies,
-and are downloaded by the depot_tools tool download_from_cloud_storage.py.
+This directory contains the d8 binaries for Windows, Mac and Linux.
 The files were fetched from the v8 builders on the DartFYI waterfall:
 http://build.chromium.org/p/client.dart.fyi/console
-The Mac binary is not yet updated, and is at version 4.4.
-Issue: https://github.com/dart-lang/sdk/issues/29794
-
 The binaries are used for testing dart code compiled to javascript.
diff --git a/third_party/d8/linux/d8-arm.sha1 b/third_party/d8/linux/d8-arm.sha1
new file mode 100644
index 00000000000..2dafdac49ad
--- /dev/null
+++ b/third_party/d8/linux/d8-arm.sha1
@@ -0,0 +1 @@
+560998fba34d0243b396ca5b63b86e4479cabb86
\ No newline at end of file
diff --git a/third_party/d8/linux/d8.sha1 b/third_party/d8/linux/d8.sha1
index fbab5e22bcd..5f0b753f834 100644
--- a/third_party/d8/linux/d8.sha1
+++ b/third_party/d8/linux/d8.sha1
@@ -1 +1 @@
-bcee297c654201a2c830e35b4d2c19cceca38b4c
\ No newline at end of file
+3ce7314d80c9591de6681bbc68f9702406ad3ece
\ No newline at end of file
diff --git a/third_party/d8/linux/natives_blob.bin.sha1 b/third_party/d8/linux/natives_blob.bin.sha1
deleted file mode 100644
index 6ab0b533b18..00000000000
--- a/third_party/d8/linux/natives_blob.bin.sha1
+++ /dev/null
@@ -1 +0,0 @@
-74b2acf3e17f16018f003037daeb2ea9fb65570c
\ No newline at end of file
diff --git a/third_party/d8/linux/snapshot_blob.bin.sha1 b/third_party/d8/linux/snapshot_blob.bin.sha1
deleted file mode 100644
index b86ae5a5d0f..00000000000
--- a/third_party/d8/linux/snapshot_blob.bin.sha1
+++ /dev/null
@@ -1 +0,0 @@
-b0c86aa82772eff25ae17c53a764204d0e50c698
\ No newline at end of file
diff --git a/third_party/d8/windows/d8.exe.sha1 b/third_party/d8/windows/d8.exe.sha1
index 312ddf91ec1..7a7f50b7390 100644
--- a/third_party/d8/windows/d8.exe.sha1
+++ b/third_party/d8/windows/d8.exe.sha1
@@ -1 +1 @@
-a489ff87bffcb3150de200a0bd85c5bbfffe674a
\ No newline at end of file
+04e58ecd97cd9ee4186fbbce99a079d7d2cb2f68
\ No newline at end of file
diff --git a/third_party/d8/windows/natives_blob.bin.sha1 b/third_party/d8/windows/natives_blob.bin.sha1
deleted file mode 100644
index 6ab0b533b18..00000000000
--- a/third_party/d8/windows/natives_blob.bin.sha1
+++ /dev/null
@@ -1 +0,0 @@
-74b2acf3e17f16018f003037daeb2ea9fb65570c
\ No newline at end of file
diff --git a/third_party/d8/windows/snapshot_blob.bin.sha1 b/third_party/d8/windows/snapshot_blob.bin.sha1
deleted file mode 100644
index 8b4d122507a..00000000000
--- a/third_party/d8/windows/snapshot_blob.bin.sha1
+++ /dev/null
@@ -1 +0,0 @@
-792073af206bdc34b1d852b5e146bdaa12260efa
\ No newline at end of file