diff --git a/README.md b/README.md
index c737b7ee3..fec02cbf7 100644
--- a/README.md
+++ b/README.md
@@ -70,6 +70,13 @@ load(
 )
 
 apple_support_dependencies()
+
+load(
+    "@com_google_protobuf//:protobuf_deps.bzl",
+    "protobuf_deps",
+)
+
+protobuf_deps()
 ```
 
 The `swift_rules_dependencies` macro creates a toolchain appropriate for your
diff --git a/WORKSPACE b/WORKSPACE
index 92ae4b826..1a69e873e 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -13,3 +13,10 @@ load(
 )
 
 apple_support_dependencies()
+
+load(
+    "@com_google_protobuf//:protobuf_deps.bzl",
+    "protobuf_deps",
+)
+
+protobuf_deps()
diff --git a/swift/repositories.bzl b/swift/repositories.bzl
index 7df164ae8..804ce7e37 100644
--- a/swift/repositories.bzl
+++ b/swift/repositories.bzl
@@ -88,30 +88,13 @@ def swift_rules_dependencies():
     _maybe(
         http_archive,
         name = "com_google_protobuf",
-        # v3.7.1, latest as of 2019-04-03
-        urls = ["https://github.com/protocolbuffers/protobuf/archive/v3.7.1.zip"],
-        sha256 = "f976a4cd3f1699b6d20c1e944ca1de6754777918320c719742e1674fcf247b7e",
-        strip_prefix = "protobuf-3.7.1",
+        # v3.8.0, latest as of 2019-05-28
+        urls = ["https://github.com/protocolbuffers/protobuf/archive/v3.8.0.zip"],
+        sha256 = "1e622ce4b84b88b6d2cdf1db38d1a634fe2392d74f0b7b74ff98f3a51838ee53",
+        strip_prefix = "protobuf-3.8.0",
         type = "zip",
     )
 
-    # TODO(https://github.com/protocolbuffers/protobuf/issues/5918):
-    # Remove this when protobuf releases protobuf_deps.bzl and instruct users to call
-    # `protobuf_deps()` instead.
-    if not native.existing_rule("net_zlib"):
-        http_archive(
-            name = "net_zlib",
-            build_file = "@com_google_protobuf//examples:third_party/zlib.BUILD",
-            sha256 = "c3e5e9fdd5004dcb542feda5ee4f0ff0744628baf8ed2dd5d66f8ca1197cb1a1",
-            strip_prefix = "zlib-1.2.11",
-            urls = ["https://zlib.net/zlib-1.2.11.tar.gz"],
-        )
-
-        native.bind(
-            name = "zlib",
-            actual = "@net_zlib//:zlib",
-        )
-
     _maybe(
         swift_autoconfiguration,
         name = "build_bazel_rules_swift_local_config",
diff --git a/third_party/com_github_grpc_grpc_swift/BUILD.overlay b/third_party/com_github_grpc_grpc_swift/BUILD.overlay
index 70a7021be..ac74a7dab 100644
--- a/third_party/com_github_grpc_grpc_swift/BUILD.overlay
+++ b/third_party/com_github_grpc_grpc_swift/BUILD.overlay
@@ -52,7 +52,7 @@ cc_library(
     tags = ["swift_module=CgRPC"],
     deps = [
         ":BoringSSL",
-        "//external:zlib",
+        "@zlib//:zlib",
     ],
 )