diff --git a/Cargo.toml b/Cargo.toml
index 105ec5a..3696cf6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -20,7 +20,7 @@ smptera-format-identifiers-rust = "0.4.0"
 
 [dev-dependencies]
 assert_matches = "1.5.0"
-bitstream-io = "2.2"
+bitstream-io = "4.7"
 criterion = "0.5.1"
 hex-literal = "0.2.1"
 hex-slice = "0.1.4"