diff --git a/Cargo.lock b/Cargo.lock
index 677409496..43c13b2aa 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -895,27 +895,27 @@ dependencies = [
 
 [[package]]
 name = "protobuf"
-version = "2.22.0"
+version = "2.22.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "73f72884896d22e0da0e5b266cb9a780b791f6c3b2f5beab6368d6cd4f0dbb86"
+checksum = "1b7f4a129bb3754c25a4e04032a90173c68f85168f77118ac4cb4936e7f06f92"
 dependencies = [
  "bytes",
 ]
 
 [[package]]
 name = "protobuf-codegen"
-version = "2.22.0"
+version = "2.22.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e8217a1652dbc91d19c509c558234145faed729191a966896414e5889f62d543"
+checksum = "e5d2fa3a461857508103b914da60dd7b489c1a834967c2e214ecc1496f0c486a"
 dependencies = [
  "protobuf",
 ]
 
 [[package]]
 name = "protobuf-codegen-pure"
-version = "2.22.0"
+version = "2.22.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1f239d71417bdc5f8d83c07aeb265f911346e5540a1a6c4285f9c3d1966ed6e3"
+checksum = "b3a2520307dbb0df861ed77603770dc23b0ec15e5048272416d6447de98e862b"
 dependencies = [
  "protobuf",
  "protobuf-codegen",
diff --git a/Cargo.toml b/Cargo.toml
index 5adf3a17d..40a1110b6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -34,8 +34,8 @@ indoc = "1.0.3"
 jujube-lib = { version = "=0.1.1", path = "lib"}
 pest = "2.1.3"
 pest_derive = "2.1.0"
-protobuf = { version = "2.22.0", features = ["with-bytes"] }
-protobuf-codegen-pure = "2.22.0"
+protobuf = { version = "2.22.1", features = ["with-bytes"] }
+protobuf-codegen-pure = "2.22.1"
 serde_json = "1.0.60"
 tempfile = "3.1.0"
 thiserror = "1.0.22"
diff --git a/lib/Cargo.toml b/lib/Cargo.toml
index 756952a12..a90163dc0 100644
--- a/lib/Cargo.toml
+++ b/lib/Cargo.toml
@@ -13,7 +13,7 @@ readme = "../README.md"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [build-dependencies]
-protobuf-codegen-pure = "2.22.0"
+protobuf-codegen-pure = "2.22.1"
 
 [dependencies]
 backoff = "0.2.1"
@@ -27,7 +27,7 @@ dirs = "3.0.1"
 git2 = "0.13.14"
 hex = "0.4.2"
 maplit = "1.0.2"
-protobuf = { version = "2.22.0", features = ["with-bytes"] }
+protobuf = { version = "2.22.1", features = ["with-bytes"] }
 rand = "0.8.0"
 serde_json = "1.0.60"
 tempfile = "3.1.0"
diff --git a/lib/src/lib.rs b/lib/src/lib.rs
index 0ccc2861a..b739e0d42 100644
--- a/lib/src/lib.rs
+++ b/lib/src/lib.rs
@@ -14,8 +14,6 @@
 
 #![feature(get_mut_unchecked)]
 #![feature(map_first_last)]
-// Work around https://github.com/stepancheg/rust-protobuf/issues/551
-#![allow(soft_unstable)]
 
 #[cfg(test)]
 #[macro_use]