diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 55f08494fc4206bf31435c82f91f647934fdb449..0837d559988a1ef120289bc6caa5ad820ab2b78e 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -12,7 +12,7 @@ stages:
     - test
 
 .rust_minimum:
-    image: "rust:1.56.0"
+    image: "rust:1.56"
 
     variables:
         CARGO_UPDATE_POLICY: newest
diff --git a/webhook-listen/Cargo.toml b/webhook-listen/Cargo.toml
index 5be44463eb749c1d6c142b4e9d278d378e201c64..05ad4b8f4bdf18348512fa90e9f075b366bcf601 100644
--- a/webhook-listen/Cargo.toml
+++ b/webhook-listen/Cargo.toml
@@ -14,7 +14,7 @@ edition = "2018"
 workspace = ".."
 
 [dependencies]
-clap = { version = "^3", default-features = false, features = ["cargo", "std"] }
+clap = { version = "^3.2.3", default-features = false, features = ["cargo", "std"] }
 env_logger = "~0.9"
 futures = "~0.3"
 http = "~0.2"
diff --git a/webhook-listen/src/main.rs b/webhook-listen/src/main.rs
index aef3565450a15fde57f8883ea701fe53876cd6f8..1676f45cd1e72e721c344a32723f27fbad0ae049 100644
--- a/webhook-listen/src/main.rs
+++ b/webhook-listen/src/main.rs
@@ -18,7 +18,7 @@ use std::net::ToSocketAddrs;
 use std::path::Path;
 use std::sync::Arc;
 
-use clap::{App, Arg};
+use clap::{App, Arg, ArgAction};
 use hyper::client::Client;
 use hyper::server::Server;
 use hyper::{service, Body, Request};
@@ -183,7 +183,7 @@ fn try_main() -> Result<(), Box<dyn Error>> {
                 .short('d')
                 .long("debug")
                 .help("Increase verbosity")
-                .multiple(true),
+                .action(ArgAction::Count),
         )
         .arg(
             Arg::with_name("LOGGER")
@@ -223,7 +223,7 @@ fn try_main() -> Result<(), Box<dyn Error>> {
         )
         .get_matches();
 
-    let log_level = match matches.occurrences_of("DEBUG") {
+    let log_level = match matches.get_one::<u8>("DEBUG").copied().unwrap_or(0) {
         0 => LevelFilter::Error,
         1 => LevelFilter::Warn,
         2 => LevelFilter::Info,
@@ -232,8 +232,9 @@ fn try_main() -> Result<(), Box<dyn Error>> {
     };
 
     let _logger = match matches
-        .value_of("LOGGER")
+        .get_one::<String>("LOGGER")
         .expect("logger should have a value")
+        .as_ref()
     {
         "env" => {
             env_logger::Builder::new().filter(None, log_level).init();
@@ -272,7 +273,7 @@ fn try_main() -> Result<(), Box<dyn Error>> {
 
     let config_path = Path::new(
         matches
-            .value_of("CONFIG")
+            .get_one::<String>("CONFIG")
             .expect("the configuration option is required"),
     );
 
@@ -280,7 +281,7 @@ fn try_main() -> Result<(), Box<dyn Error>> {
         Config::from_path(&config_path)?;
     } else if matches.is_present("RELOAD") {
         let address = matches
-            .value_of("ADDRESS")
+            .get_one::<String>("ADDRESS")
             .expect("the address option is required");
         let url = format!("http://{}/__reload", address);
         let req = Request::put(url).body(Body::empty())?;
@@ -304,7 +305,7 @@ fn try_main() -> Result<(), Box<dyn Error>> {
         let rt = tokio::runtime::Runtime::new().map_err(RunError::tokio_startup)?;
         rt.block_on(run_from_config(
             matches
-                .value_of("ADDRESS")
+                .get_one::<String>("ADDRESS")
                 .expect("the address option is required"),
             config_path,
         ))?;