diff --git a/Cargo.lock b/Cargo.lock
index e841e6a..7e72593 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -48,9 +48,9 @@ checksum = "63396b8a4b9de3f4fdfb320ab6080762242f66a8ef174c49d8e19b674db4cdbe"
 
 [[package]]
 name = "bytes"
-version = "1.0.1"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b700ce4376041dcd0a327fd0097c41095743c4c8af8887265942faf1100bd040"
+checksum = "c4872d67bab6358e59559027aa3b9157c53d9358c51423c17554809a8858e0f8"
 
 [[package]]
 name = "cc"
@@ -237,11 +237,12 @@ dependencies = [
 
 [[package]]
 name = "protobuf"
-version = "3.0.0-alpha.1"
+version = "3.0.0-alpha.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "179dfed5ac5d90df13ede91b3035443ec07e0ec964b86afb10700597b5f990bc"
+checksum = "a416d5c5d48e9cec99c6348d72567827a7db92eb9a6dac4c6bbf498c92b5387c"
 dependencies = [
  "bytes",
+ "thiserror",
 ]
 
 [[package]]
@@ -376,6 +377,26 @@ dependencies = [
  "winapi-util",
 ]
 
+[[package]]
+name = "thiserror"
+version = "1.0.30"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "854babe52e4df1653706b98fcfc05843010039b406875930a70e4d9644e5c417"
+dependencies = [
+ "thiserror-impl",
+]
+
+[[package]]
+name = "thiserror-impl"
+version = "1.0.30"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aa32fd3f627f367fe16f893e2597ae3c05020f8bba2666a4e6ea73d377e5714b"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "unicode-xid"
 version = "0.2.1"
diff --git a/Cargo.toml b/Cargo.toml
index badb408..5f75327 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,7 +12,7 @@ anyhow = "1.0"
 env_logger = "0.8"
 log = "0.4"
 predicates = "2.0.0"
-protobuf = { version = "3.0.0-alpha", features = ["with-bytes"] }
+protobuf = { version = "3.0.0-alpha.8", features = ["with-bytes"] }
 rust-embed = "5.9"
 rustls = "0.19.0"
 uuid = { version = "0.8", features = ["v4"] }