diff --git a/Cargo.toml b/Cargo.toml
index f0f07203..74ae5d24 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,7 +16,7 @@ default = ["chrono"]
 
 [dependencies]
 libc = "0.2"
-bitflags = "1"
+bitflags = "~1.2"
 lazy_static = "1"
 chrono = {version = "0.4", optional = true }
 byteorder = {version="1", features=["i128"]}