diff --git a/terragrunt/modules/release-distribution/lambdas/static-router/index.js b/terragrunt/modules/release-distribution/lambdas/static-router/index.js
index 6ab00123d..c8c158077 100644
--- a/terragrunt/modules/release-distribution/lambdas/static-router/index.js
+++ b/terragrunt/modules/release-distribution/lambdas/static-router/index.js
@@ -39,7 +39,9 @@ echo "    curl https://sh.rustup.rs -sSf | sh"
     // them back through the doc site to take advantage of any helpful error
     // handling that may be defined there
     if (request.uri.startsWith('/doc/master')) {
-        return redirect('//doc.rust-lang.org/stable' + request.uri.slice(11), callback);
+        // The slice method is used to remove the '/doc/master' prefix from the
+        // URI. 11 is the length of '/doc/master'.
+        return redirect('https://doc.rust-lang.org/stable' + request.uri.slice(11), callback);
     }
 
     callback(null, request);