diff --git a/Cargo.lock b/Cargo.lock
index 745d186..6221dc0 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -55,9 +55,12 @@ dependencies = [
 
 [[package]]
 name = "bitstream-io"
-version = "2.6.0"
+version = "4.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6099cdc01846bc367c4e7dd630dc5966dccf36b652fae7a74e17b640411a91b2"
+checksum = "7eff00be299a18769011411c9def0d827e8f2d7bf0c3dbf53633147a8867fd1f"
+dependencies = [
+ "no_std_io2",
+]
 
 [[package]]
 name = "bumpalo"
@@ -383,6 +386,15 @@ dependencies = [
  "smptera-format-identifiers-rust",
 ]
 
+[[package]]
+name = "no_std_io2"
+version = "0.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b51ed7824b6e07d354605f4abb3d9d300350701299da96642ee084f5ce631550"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "num-traits"
 version = "0.2.19"
diff --git a/Cargo.toml b/Cargo.toml
index 6ba1776..1d35eff 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -19,7 +19,7 @@ smptera-format-identifiers-rust = "0.5.0"
 
 [dev-dependencies]
 assert_matches = "1.5.0"
-bitstream-io = "2.2"
+bitstream-io = "4.10"
 criterion = "0.8.2"
 hex-literal = "0.2.1"
 hex-slice = "0.1.4"