diff --git a/base/trace_event/common b/base/trace_event/common
index bd79231e..dab187b3 160000
--- a/base/trace_event/common
+++ b/base/trace_event/common
@@ -1 +1 @@
-Subproject commit bd79231eb1f9e7de2efb4ad79e530d9a7e70d9a5
+Subproject commit dab187b372fc17e51f5b9fad8201813d0aed5129
diff --git a/build b/build
index e854654b..cfbf17d7 160000
--- a/build
+++ b/build
@@ -1 +1 @@
-Subproject commit e854654b50f127f2b48fbf68fc2709a605c23f6a
+Subproject commit cfbf17d712645e2c345cae3aab592459bc4492cf
diff --git a/build.rs b/build.rs
index 825cafe3..12e3876d 100644
--- a/build.rs
+++ b/build.rs
@@ -142,7 +142,7 @@ fn download_ninja_gn_binaries() {
     .parent()
     .unwrap();
   let bin_dir = target_dir
-    .join("ninja_gn_binaries-20191129")
+    .join("ninja_gn_binaries-20200313")
     .join(platform());
   let gn = bin_dir.join("gn");
   let ninja = bin_dir.join("ninja");
diff --git a/buildtools b/buildtools
index b7faa455..d0a9124c 160000
--- a/buildtools
+++ b/buildtools
@@ -1 +1 @@
-Subproject commit b7faa4551a207930cc5034cdfa2aacdfce6db142
+Subproject commit d0a9124cf0c6622fb2a790834b86bb51d90ad6a1
diff --git a/tests/test_api.rs b/tests/test_api.rs
index da816999..0b1d3f8e 100644
--- a/tests/test_api.rs
+++ b/tests/test_api.rs
@@ -2639,7 +2639,7 @@ fn inspector_schedule_pause_on_next_statement() {
 
   assert_eq!(channel.count_send_response, 1);
   assert_eq!(channel.count_send_notification, 3);
-  assert_eq!(channel.count_flush_protocol_notifications, 0);
+  assert_eq!(channel.count_flush_protocol_notifications, 1);
   assert_eq!(client.count_run_message_loop_on_pause, 1);
   assert_eq!(client.count_quit_message_loop_on_pause, 0);
   assert_eq!(client.count_run_if_waiting_for_debugger, 0);
diff --git a/third_party/zlib b/third_party/zlib
index b9b9a5af..c2eb8a7f 160000
--- a/third_party/zlib
+++ b/third_party/zlib
@@ -1 +1 @@
-Subproject commit b9b9a5af7cca2e683e5f2aead8418e5bf9d5a7d5
+Subproject commit c2eb8a7f7a0fa7884234ebc1b836644084ccbec9
diff --git a/tools/clang b/tools/clang
index 953ea7af..8bf2cd1b 160000
--- a/tools/clang
+++ b/tools/clang
@@ -1 +1 @@
-Subproject commit 953ea7aff8c12dbd015f193d52e5abf276d41e85
+Subproject commit 8bf2cd1b9f11b215fed4bbf9cbb9848c36fb4c6d
diff --git a/tools/ninja_gn_binaries.py b/tools/ninja_gn_binaries.py
index 63c277ef..b22f6fa3 100755
--- a/tools/ninja_gn_binaries.py
+++ b/tools/ninja_gn_binaries.py
@@ -18,7 +18,7 @@ except ImportError:  # For Py3 compatibility
     from urllib.error import HTTPError, URLError
     from urllib.request import urlopen
 
-URL = "https://github.com/denoland/ninja_gn_binaries/archive/20191129.tar.gz"
+URL = "https://github.com/denoland/ninja_gn_binaries/archive/20200313.tar.gz"
 DIR = None
 
 
diff --git a/tools/upgrade_v8.sh b/tools/upgrade_v8.sh
index 5b2974b4..283624e5 100644
--- a/tools/upgrade_v8.sh
+++ b/tools/upgrade_v8.sh
@@ -1,7 +1,7 @@
 # WARNING: This is not an automated tool! This is just some commands to copy and
 # paste manually to upgrade V8.
 
-export COMMITDATE=2020-01-30T00:37:18.000Z
+export COMMITDATE=2020-03-12T13:37:01.000Z
 
 git submodule foreach 'git remote rm upstream; true' &&
 git -C build remote add upstream https://chromium.googlesource.com/chromium/src/build &&
@@ -10,6 +10,6 @@ git submodule foreach 'git remote add upstream `git remote get-url origin`; true
 git submodule foreach 'git remote update' &&
 git submodule foreach 'export SHA=`git log upstream/master -n1 --until=$COMMITDATE --pretty=%H` && git merge $SHA -m "Merge commit $SHA from `git remote get-url upstream`"'
 
-export BRANCH=20200130_rusty_v8
+export BRANCH=20200313_rusty_v8
 git -C build push git@github.com:denoland/chromium_build HEAD:refs/heads/$BRANCH
 git -C buildtools push git@github.com:denoland/chromium_buildtools HEAD:refs/heads/$BRANCH
diff --git a/v8 b/v8
index 62aeb045..3f53e61b 160000
--- a/v8
+++ b/v8
@@ -1 +1 @@
-Subproject commit 62aeb04515990c92d82af9f4843d4cdb4085a9a5
+Subproject commit 3f53e61b1c062fc59791b04e32f7cdea69591ee9