diff --git a/Cargo.lock b/Cargo.lock
index 9ab0cdc..563ef50 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -132,6 +132,7 @@ dependencies = [
  "glob",
  "hostname",
  "indicatif",
+ "lazy_static",
  "libc",
  "log",
  "quit",
diff --git a/Cargo.toml b/Cargo.toml
index eb696c0..32636be 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -17,6 +17,7 @@ futures = "0.3.8"
 glob = "0.3.0"
 hostname = "0.3.1"
 indicatif = "0.17.0-beta.1"
+lazy_static = "1.4.0"
 libc = "0.2.81"
 log = "0.4.11"
 quit = "1.1.2"
diff --git a/src/cli.rs b/src/cli.rs
index 720b99a..6644f19 100644
--- a/src/cli.rs
+++ b/src/cli.rs
@@ -1,8 +1,19 @@
 //! Global CLI Setup.
 
 use clap::{App, AppSettings, Arg, ArgMatches, SubCommand};
+use lazy_static::lazy_static;
+
 use crate::command;
 
+lazy_static! {
+    static ref CONFIG_HELP: String = {
+        format!(r#"If this argument is not specified, Colmena will search upwards from the current working directory for a file named "flake.nix" or "hive.nix". This behavior is disabled if --config/-f is given explicitly.
+
+For a sample configuration, see <https://zhaofengli.github.io/colmena/{}>.
+"#, env!("CARGO_PKG_VERSION"))
+    };
+}
+
 macro_rules! register_command {
     ($module:ident, $app:ident) => {
         $app = $app.subcommand(command::$module::subcommand());
@@ -25,9 +36,10 @@ macro_rules! handle_command {
 }
 
 pub fn build_cli(include_internal: bool) -> App<'static, 'static> {
+    let version = env!("CARGO_PKG_VERSION");
     let mut app = App::new("Colmena")
         .bin_name("colmena")
-        .version("0.1.0")
+        .version(version)
         .author("Zhaofeng Li <hello@zhaofeng.li>")
         .about("NixOS deployment tool")
         .global_setting(AppSettings::ColoredHelp)
@@ -45,10 +57,7 @@ pub fn build_cli(include_internal: bool) -> App<'static, 'static> {
             // or "hive.nix". This behavior is disabled if --config/-f
             // is explicitly supplied by the user (occurrences_of > 0).
             .default_value("hive.nix")
-            .long_help(r#"If this argument is not specified, Colmena will search upwards from the current working directory for a file named "flake.nix" or "hive.nix". This behavior is disabled if --config/-f is given explicitly.
-
-For a sample configuration, see <https://github.com/zhaofengli/colmena>.
-"#)
+            .long_help(&CONFIG_HELP)
             .global(true))
         .arg(Arg::with_name("show-trace")
             .long("show-trace")