diff --git a/bazel/repositories.bzl b/bazel/repositories.bzl
index 2f9ec80e1ab1c..7d6734c90df8d 100644
--- a/bazel/repositories.bzl
+++ b/bazel/repositories.bzl
@@ -830,11 +830,21 @@ def _com_github_grpc_grpc():
         actual = "@upb//:descriptor_upb_proto",
     )
 
+    native.bind(
+        name = "upb_lib_descriptor_reflection",
+        actual = "@upb//:descriptor_upb_proto_reflection",
+    )
+
     native.bind(
         name = "upb_textformat_lib",
         actual = "@upb//:textformat",
     )
 
+    native.bind(
+        name = "upb_json_lib",
+        actual = "@upb//:json",
+    )
+
 def _upb():
     external_http_archive(name = "upb")
 
diff --git a/bazel/repository_locations.bzl b/bazel/repository_locations.bzl
index fb95dcac278c9..84bbecc323033 100644
--- a/bazel/repository_locations.bzl
+++ b/bazel/repository_locations.bzl
@@ -105,12 +105,12 @@ REPOSITORY_LOCATIONS_SPEC = dict(
         project_name = "Abseil",
         project_desc = "Open source collection of C++ libraries drawn from the most fundamental pieces of Google’s internal codebase",
         project_url = "https://abseil.io/",
-        version = "5d8fc9192245f0ea67094af57399d7931d6bd53f",
-        sha256 = "e3812f256dd7347a33bf9d93a950cf356c61c0596842ff07d8154cd415145d83",
+        version = "17c954d90d5661e27db8fc5f086085690a8372d9",
+        sha256 = "2e4ace2ed32a4ccfd29e856ad72b4fd1eae2ec060d3ba8646857fa170d6e8269",
         strip_prefix = "abseil-cpp-{version}",
         urls = ["https://github.com/abseil/abseil-cpp/archive/{version}.tar.gz"],
         use_category = ["dataplane_core", "controlplane"],
-        release_date = "2020-11-24",
+        release_date = "2021-06-03",
         cpe = "N/A",
     ),
     com_github_c_ares_c_ares = dict(
@@ -239,12 +239,12 @@ REPOSITORY_LOCATIONS_SPEC = dict(
         project_name = "gRPC",
         project_desc = "gRPC C core library",
         project_url = "https://grpc.io",
-        version = "1.34.0",
-        sha256 = "7372a881122cd85a7224435a1d58bc5e11c88d4fb98a64b83f36f3d1c2f16d39",
+        version = "a3ae8e00a2c5553c806e83fae83e33f0198913f0",
+        sha256 = "1ccc2056b68b81ada8df61310e03dfa0541c34821fd711654d0590a7321db9c8",
         strip_prefix = "grpc-{version}",
-        urls = ["https://github.com/grpc/grpc/archive/v{version}.tar.gz"],
+        urls = ["https://github.com/grpc/grpc/archive/{version}.tar.gz"],
         use_category = ["dataplane_core", "controlplane"],
-        release_date = "2020-12-02",
+        release_date = "2021-06-07",
         cpe = "cpe:2.3:a:grpc:grpc:*",
     ),
     com_github_luajit_luajit = dict(