diff --git a/Cargo.lock b/Cargo.lock
index 26b5604a7..9f68b6c98 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -356,7 +356,7 @@ dependencies = [
 
 [[package]]
 name = "procs"
-version = "0.3.1-pre"
+version = "0.3.1"
 dependencies = [
  "chrono 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "console 0.7.5 (registry+https://github.com/rust-lang/crates.io-index)",
diff --git a/Cargo.toml b/Cargo.toml
index f8b5bbda0..37e4487e2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "procs"
-version = "0.3.1-pre"
+version = "0.3.1"
 authors = ["dalance@gmail.com"]
 repository = "https://github.com/dalance/procs"
 keywords = ["process"]