diff --git a/Cargo.toml b/Cargo.toml
index 971b611..a6ba7fe 100755
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -34,6 +34,7 @@ num = "0.2"
 num_cpus = "1.8"
 percent-encoding = "2.1"
 petgraph = "0.4"
+postgres = "0.15"
 rand = "0.6"
 rayon = "1.0"
 regex = "1.0"
diff --git a/src/web/clients/download/basic.md b/src/web/clients/download/basic.md
index bad3f78..9eeb659 100755
--- a/src/web/clients/download/basic.md
+++ b/src/web/clients/download/basic.md
@@ -26,7 +26,7 @@ use tempfile::Builder;
 #     }
 # }
 
-fn run() -> Result<()> {
+fn main() -> Result<()> {
     let tmp_dir = Builder::new().prefix("example").tempdir()?;
     let target = "https://www.rust-lang.org/logos/rust-logo-512x512.png";
     let mut response = reqwest::get(target)?;