diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 8f1efc7..cd64770 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -25,7 +25,7 @@ jobs:
     strategy:
       matrix:
         toolchain:
-          - 1.65.0
+          - 1.70.0
           - nightly
         os:
           - ubuntu-latest
diff --git a/Cargo.toml b/Cargo.toml
index ac78cbd..25acfc4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -20,7 +20,7 @@ repository.workspace = true
 
 [features]
 default = ["ledger", "specter", "coldcard", "bitbox", "jade"]
-bitbox = ["tokio", "hidapi", "bitbox-api", "regex", "prost", "prost-derive", "zeroize"]
+bitbox = ["tokio", "hidapi", "bitbox-api", "regex"]
 coldcard = ["dep:coldcard", "regex"]
 specter = ["tokio", "tokio-serial", "serialport"]
 jade = ["tokio", "tokio-serial", "serde", "serde_bytes", "serde_cbor", "serialport", "reqwest"]
@@ -44,10 +44,6 @@ reqwest = { version = "0.11", default-features = false, features = ["json", "rus
 
 # bitbox
 bitbox-api = { version = "0.2.3", default-features = false, features = ["usb", "tokio", "multithreaded"], optional = true }
-# pin the deps to satisfy msrv 1.65
-prost = { version = "=0.12.2", optional = true }
-prost-derive = { version = "=0.12.2", optional = true }
-zeroize = { version = "=1.7.0", optional = true }
 
 # coldcard
 coldcard = { version = "0.12.2", optional = true }
diff --git a/README.md b/README.md
index 6b5bccc..a309284 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # async-hwi
 
-Current **Minimum Supported Rust Version**: v1.65.0
+Current **Minimum Supported Rust Version**: v1.70.0
 
 ```rust
 /// HWI is the common Hardware Wallet Interface.