diff --git a/Cargo.toml b/Cargo.toml
index f87c770..15f900e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "minstant"
-version = "0.1.6"
+version = "0.1.7"
 authors = ["The TiKV Authors"]
 edition = "2021"
 license = "MIT"
diff --git a/README.md b/README.md
index e9f3749..2b798c9 100644
--- a/README.md
+++ b/README.md
@@ -29,7 +29,14 @@ This library is used by a high performance tracing library [`minitrace-rust`](ht
 
 ## Platform Support
 
-Currently, only the Linux on `x86` or `x86_64` is backed by [TSC](https://en.wikipedia.org/wiki/Time_Stamp_Counter). On other platforms, `minstant` falls back to coarse time. If TSC is unstable, it will also fall back to coarse time.
+Currently, only the Linux on `x86` or `x86_64` is backed by [TSC](https://en.wikipedia.org/wiki/Time_Stamp_Counter). On other platforms, `minstant` falls back to std::time. If TSC is unstable, it will also fall back to std::time.
+
+If speed is privileged over accuracy when fallback occur, you can use `fallback-corase` feature to corase time:
+
+```toml
+[dependencies]
+minstant = { version = "0.1", features = ["fallback-coarse"] }
+```
 
 ## Benchmark