diff --git a/src/mako/Cargo.toml.mako b/src/mako/Cargo.toml.mako
index 560bdbc3a4..6c9b5ac77b 100644
--- a/src/mako/Cargo.toml.mako
+++ b/src/mako/Cargo.toml.mako
@@ -26,7 +26,7 @@ path = "src/main.rs"
 % endif
 
 [dependencies]
-hyper-rustls = "^0.22"
+hyper-rustls = "0.23.0"
 ## Must match the one hyper uses, otherwise there are duplicate similarly named `Mime` structs
 mime = "^ 0.2.0"
 serde = "^ 1.0"
diff --git a/src/mako/api/lib/lib.mako b/src/mako/api/lib/lib.mako
index b9f722814c..3a7ea6bf82 100644
--- a/src/mako/api/lib/lib.mako
+++ b/src/mako/api/lib/lib.mako
@@ -261,7 +261,7 @@ let auth = oauth2::InstalledFlowAuthenticator::builder(
         secret,
         oauth2::InstalledFlowReturnMethod::HTTPRedirect,
     ).build().await.unwrap();
-let mut hub = ${hub_type}::new(hyper::Client::builder().build(hyper_rustls::HttpsConnector::with_native_roots()), auth);\
+let mut hub = ${hub_type}::new(hyper::Client::builder().build(hyper_rustls::HttpsConnector::with_native_roots().https_or_http().enable_http1().enable_http2().build()), auth);\
 </%def>
 
 ## You will still have to set the filter for your comment type - either nothing, or rust_doc_comment !
diff --git a/src/mako/cli/lib/engine.mako b/src/mako/cli/lib/engine.mako
index e3f2f4b59f..1aaed33930 100644
--- a/src/mako/cli/lib/engine.mako
+++ b/src/mako/cli/lib/engine.mako
@@ -121,7 +121,13 @@ impl<'n> Engine<'n> {
             oauth2::InstalledFlowReturnMethod::HTTPRedirect,
         ).persist_tokens_to_disk(format!("{}/${util.program_name()}", config_dir)).build().await.unwrap();
 
-        let client = hyper::Client::builder().build(hyper_rustls::HttpsConnector::with_native_roots());
+        let client = hyper::Client::builder().build(
+            hyper_rustls::HttpsConnector::with_native_roots()
+                .https_or_http()
+                .enable_http1()
+                .enable_http2()
+                .build()
+	);
 <% gpm = gen_global_parameter_names(parameters) %>\
         let engine = Engine {
             opt: opt,