diff --git a/Cargo.lock b/Cargo.lock
index 862f056..af8acc1 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,5 +1,7 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+version = 3
+
 [[package]]
 name = "addr2line"
 version = "0.14.0"
@@ -266,6 +268,7 @@ dependencies = [
  "lazy_static",
  "linked-hash-map",
  "num_cpus",
+ "openssl",
  "rand",
  "regex",
  "reqwest",
diff --git a/Cargo.toml b/Cargo.toml
index 7aed79e..c7b0a1a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -19,9 +19,10 @@ yaml-rust = "0.4.3"
 url = "2.1.1"
 linked-hash-map = "0.5.3"
 tokio = { version = "0.2.20", features = ["rt-core", "rt-threaded", "time", "net", "io-driver"] }
-reqwest = { version = "0.10.4", features = ["cookies", "trust-dns"] }
+reqwest = { version = "0.10.4", features = ["cookies", "trust-dns", "native-tls"] }
 async-trait = "0.1.30"
 futures = "0.3.5"
 lazy_static = "1.4.0"
 num_cpus = "1.13.0"
 rand = "0.7.3"
+openssl = "0.10.30"
diff --git a/src/actions/request.rs b/src/actions/request.rs
index f5f7530..f4b3a9c 100644
--- a/src/actions/request.rs
+++ b/src/actions/request.rs
@@ -151,7 +151,27 @@ impl Request {
     // Resolve the body
     let request = {
       let mut pool2 = pool.lock().unwrap();
-      let client = pool2.entry(domain).or_insert_with(|| ClientBuilder::default().danger_accept_invalid_certs(config.no_check_certificate).build().unwrap());
+      let client = pool2.entry(domain).or_insert_with(|| {
+        let mut builder = ClientBuilder::default().danger_accept_invalid_certs(config.no_check_certificate);
+        if let Some(ref pem) = config.maybe_cert {
+          let identity = make_identity(pem);
+          builder = builder.identity(identity);
+        }
+
+        if let Some(ref cacert) = config.maybe_cacert {
+          let cacert = match reqwest::Certificate::from_pem(&cacert) {
+            Ok(cert) => cert,
+            Err(e) => {
+              eprintln!("Reqwest certificate error: {}", e);
+              std::process::exit(-1);
+            }
+          };
+
+          builder = builder.add_root_certificate(cacert);
+        }
+
+        builder.build().unwrap()
+      });
 
       let request = if let Some(body) = self.body.as_ref() {
         interpolated_body = uninterpolator.get_or_insert(interpolator::Interpolator::new(context)).resolve(body, !config.relaxed_interpolations);
@@ -300,3 +320,28 @@ impl Runnable for Request {
     }
   }
 }
+
+fn make_identity(pem: &Vec<u8>) -> reqwest::Identity {
+  fn make_der(pem: &Vec<u8>) -> Result<Vec<u8>, openssl::error::ErrorStack> {
+    let key = openssl::pkey::PKey::private_key_from_pem(&pem)?;
+    let crt = openssl::x509::X509::from_pem(&pem)?;
+
+    let pkcs12_builder = openssl::pkcs12::Pkcs12::builder();
+    let pkcs12 = pkcs12_builder.build("", "client crt", &key, &crt)?;
+    pkcs12.to_der()
+  }
+
+  match make_der(&pem) {
+    Ok(der) => match reqwest::Identity::from_pkcs12_der(&der, "") {
+      Ok(identity) => identity,
+      Err(e) => {
+        eprintln!("Reqwest ssl error: {}", e);
+        std::process::exit(-1)
+      }
+    },
+    Err(e) => {
+      eprintln!("Openssl error: {}", e);
+      std::process::exit(-1);
+    }
+  }
+}
diff --git a/src/benchmark.rs b/src/benchmark.rs
index 69a257c..7db1f0b 100644
--- a/src/benchmark.rs
+++ b/src/benchmark.rs
@@ -53,8 +53,8 @@ fn join<S: ToString>(l: Vec<S>, sep: &str) -> String {
   )
 }
 
-pub fn execute(benchmark_path: &str, report_path_option: Option<&str>, relaxed_interpolations: bool, no_check_certificate: bool, quiet: bool, nanosec: bool) -> BenchmarkResult {
-  let config = Arc::new(Config::new(benchmark_path, relaxed_interpolations, no_check_certificate, quiet, nanosec));
+pub fn execute(benchmark_path: &str, report_path_option: Option<&str>, relaxed_interpolations: bool, no_check_certificate: bool, maybe_cert_path: Option<&str>, maybe_cacert_path: Option<&str>, quiet: bool, nanosec: bool) -> BenchmarkResult {
+  let config = Arc::new(Config::new(benchmark_path, relaxed_interpolations, no_check_certificate, maybe_cert_path, maybe_cacert_path, quiet, nanosec));
 
   if report_path_option.is_some() {
     println!("{}: {}. Ignoring {} and {} properties...", "Report mode".yellow(), "on".purple(), "concurrency".yellow(), "iterations".yellow());
diff --git a/src/config.rs b/src/config.rs
index 0a91cbf..29e568e 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -3,6 +3,7 @@ use yaml_rust::{Yaml, YamlLoader};
 use crate::benchmark::Context;
 use crate::interpolator;
 use crate::reader;
+use std::io::Read;
 
 const NITERATIONS: i64 = 1;
 const NRAMPUP: i64 = 0;
@@ -13,13 +14,15 @@ pub struct Config {
   pub iterations: i64,
   pub relaxed_interpolations: bool,
   pub no_check_certificate: bool,
+  pub maybe_cert: Option<Vec<u8>>,
+  pub maybe_cacert: Option<Vec<u8>>,
   pub rampup: i64,
   pub quiet: bool,
   pub nanosec: bool,
 }
 
 impl Config {
-  pub fn new(path: &str, relaxed_interpolations: bool, no_check_certificate: bool, quiet: bool, nanosec: bool) -> Config {
+  pub fn new(path: &str, relaxed_interpolations: bool, no_check_certificate: bool, maybe_cert_path: Option<&str>, maybe_cacert_path: Option<&str>, quiet: bool, nanosec: bool) -> Config {
     let config_file = reader::read_file(path);
 
     let config_docs = YamlLoader::load_from_str(config_file.as_str()).unwrap();
@@ -37,12 +40,32 @@ impl Config {
       panic!("The concurrency can not be higher than the number of iterations")
     }
 
+    let maybe_cert = maybe_cert_path.map(|path| {
+      let mut pem = Vec::new();
+      if let Err(e) = std::fs::File::open(path).and_then(|mut path| path.read_to_end(&mut pem)) {
+        eprintln!("Error opening --cert file {}: {}", path, e);
+        std::process::exit(-1);
+      }
+      pem
+    });
+
+    let maybe_cacert = maybe_cacert_path.map(|path| {
+      let mut cert = Vec::new();
+      if let Err(e) = std::fs::File::open(path).and_then(|mut path| path.read_to_end(&mut cert)) {
+        eprintln!("Error opening --cacert file {}: {}", path, e);
+        std::process::exit(-1);
+      }
+      cert
+    });
+
     Config {
       base,
       concurrency,
       iterations,
       relaxed_interpolations,
       no_check_certificate,
+      maybe_cert,
+      maybe_cacert,
       rampup,
       quiet,
       nanosec,
@@ -97,3 +120,5 @@ fn read_i64_configuration(config_doc: &Yaml, interpolator: &interpolator::Interp
     }
   }
 }
+
+
diff --git a/src/expandable/include.rs b/src/expandable/include.rs
index 8ca11ea..8ab4d76 100644
--- a/src/expandable/include.rs
+++ b/src/expandable/include.rs
@@ -71,6 +71,7 @@ pub fn expand_from_filepath(parent_path: &str, mut benchmark: &mut Benchmark, ac
   }
 }
 
+#[cfg(test)]
 mod tests {
   use super::*;
 
diff --git a/src/main.rs b/src/main.rs
index 9f7808f..c87875f 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -27,11 +27,13 @@ fn main() {
   let relaxed_interpolations = matches.is_present("relaxed-interpolations");
   let quiet = matches.is_present("quiet");
   let nanosec = matches.is_present("nanosec");
+  let cert = matches.value_of("cert");
+  let cacert = matches.value_of("cacert");
 
   #[cfg(windows)]
   let _ = control::set_virtual_terminal(true);
 
-  let benchmark_result = benchmark::execute(benchmark_file, report_path_option, relaxed_interpolations, no_check_certificate, quiet, nanosec);
+  let benchmark_result = benchmark::execute(benchmark_file, report_path_option, relaxed_interpolations, no_check_certificate, cert, cacert, quiet, nanosec);
   let list_reports = benchmark_result.reports;
   let duration = benchmark_result.duration;
 
@@ -54,6 +56,8 @@ fn app_args<'a>() -> clap::ArgMatches<'a> {
     .arg(Arg::with_name("no-check-certificate").long("no-check-certificate").help("Disables SSL certification check. (Not recommended)").takes_value(false))
     .arg(Arg::with_name("quiet").short("q").long("quiet").help("Disables output").takes_value(false))
     .arg(Arg::with_name("nanosec").short("n").long("nanosec").help("Shows statistics in nanoseconds").takes_value(false))
+    .arg(Arg::with_name("cert").help("Use the specified client certificate (analogous to curl --cert)").long("cert").required(false).takes_value(true))
+    .arg(Arg::with_name("cacert").help("Use the specified certificate to verify the peer (analogous to curl --cacert)").long("cacert").required(false).takes_value(true))
     .get_matches()
 }