diff --git a/Sources/GRPCCore/Documentation.docc/Tutorials/Route-Guide/Resources/route-guide-sec06-step03-create-client.swift b/Sources/GRPCCore/Documentation.docc/Tutorials/Route-Guide/Resources/route-guide-sec06-step03-create-client.swift
index a5f51df0a..445f09ede 100644
--- a/Sources/GRPCCore/Documentation.docc/Tutorials/Route-Guide/Resources/route-guide-sec06-step03-create-client.swift
+++ b/Sources/GRPCCore/Documentation.docc/Tutorials/Route-Guide/Resources/route-guide-sec06-step03-create-client.swift
@@ -5,7 +5,7 @@ extension RouteGuide {
     let client = try GRPCClient(
       transport: .http2NIOPosix(
         target: .ipv4(host: "127.0.0.1", port: 31415),
-        config: .defaults()
+        config: .defaults(transportSecurity: .plaintext)
       )
     )
   }
diff --git a/Sources/GRPCCore/Documentation.docc/Tutorials/Route-Guide/Resources/route-guide-sec06-step04-run-client.swift b/Sources/GRPCCore/Documentation.docc/Tutorials/Route-Guide/Resources/route-guide-sec06-step04-run-client.swift
index 990676047..c667bf626 100644
--- a/Sources/GRPCCore/Documentation.docc/Tutorials/Route-Guide/Resources/route-guide-sec06-step04-run-client.swift
+++ b/Sources/GRPCCore/Documentation.docc/Tutorials/Route-Guide/Resources/route-guide-sec06-step04-run-client.swift
@@ -5,7 +5,7 @@ extension RouteGuide {
     let client = try GRPCClient(
       transport: .http2NIOPosix(
         target: .ipv4(host: "127.0.0.1", port: 31415),
-        config: .defaults()
+        config: .defaults(transportSecurity: .plaintext)
       )
     )
 
diff --git a/Sources/GRPCCore/Documentation.docc/Tutorials/Route-Guide/Resources/route-guide-sec06-step05-stub.swift b/Sources/GRPCCore/Documentation.docc/Tutorials/Route-Guide/Resources/route-guide-sec06-step05-stub.swift
index 693b6993c..6d4e9dc7e 100644
--- a/Sources/GRPCCore/Documentation.docc/Tutorials/Route-Guide/Resources/route-guide-sec06-step05-stub.swift
+++ b/Sources/GRPCCore/Documentation.docc/Tutorials/Route-Guide/Resources/route-guide-sec06-step05-stub.swift
@@ -5,7 +5,7 @@ extension RouteGuide {
     let client = try GRPCClient(
       transport: .http2NIOPosix(
         target: .ipv4(host: "127.0.0.1", port: 31415),
-        config: .defaults()
+        config: .defaults(transportSecurity: .plaintext)
       )
     )
 
diff --git a/Sources/GRPCCore/Documentation.docc/Tutorials/Route-Guide/Resources/route-guide-sec06-step06-get-feature.swift b/Sources/GRPCCore/Documentation.docc/Tutorials/Route-Guide/Resources/route-guide-sec06-step06-get-feature.swift
index deb719eda..4f7efb31c 100644
--- a/Sources/GRPCCore/Documentation.docc/Tutorials/Route-Guide/Resources/route-guide-sec06-step06-get-feature.swift
+++ b/Sources/GRPCCore/Documentation.docc/Tutorials/Route-Guide/Resources/route-guide-sec06-step06-get-feature.swift
@@ -5,7 +5,7 @@ extension RouteGuide {
     let client = try GRPCClient(
       transport: .http2NIOPosix(
         target: .ipv4(host: "127.0.0.1", port: 31415),
-        config: .defaults()
+        config: .defaults(transportSecurity: .plaintext)
       )
     )
 
diff --git a/Sources/GRPCCore/Documentation.docc/Tutorials/Route-Guide/Resources/route-guide-sec06-step07-list-features.swift b/Sources/GRPCCore/Documentation.docc/Tutorials/Route-Guide/Resources/route-guide-sec06-step07-list-features.swift
index b36d22e88..22caf8eeb 100644
--- a/Sources/GRPCCore/Documentation.docc/Tutorials/Route-Guide/Resources/route-guide-sec06-step07-list-features.swift
+++ b/Sources/GRPCCore/Documentation.docc/Tutorials/Route-Guide/Resources/route-guide-sec06-step07-list-features.swift
@@ -5,7 +5,7 @@ extension RouteGuide {
     let client = try GRPCClient(
       transport: .http2NIOPosix(
         target: .ipv4(host: "127.0.0.1", port: 31415),
-        config: .defaults()
+        config: .defaults(transportSecurity: .plaintext)
       )
     )
 
diff --git a/Sources/GRPCCore/Documentation.docc/Tutorials/Route-Guide/Resources/route-guide-sec06-step08-record-route.swift b/Sources/GRPCCore/Documentation.docc/Tutorials/Route-Guide/Resources/route-guide-sec06-step08-record-route.swift
index 8068f6c31..ab68b76c9 100644
--- a/Sources/GRPCCore/Documentation.docc/Tutorials/Route-Guide/Resources/route-guide-sec06-step08-record-route.swift
+++ b/Sources/GRPCCore/Documentation.docc/Tutorials/Route-Guide/Resources/route-guide-sec06-step08-record-route.swift
@@ -5,7 +5,7 @@ extension RouteGuide {
     let client = try GRPCClient(
       transport: .http2NIOPosix(
         target: .ipv4(host: "127.0.0.1", port: 31415),
-        config: .defaults()
+        config: .defaults(transportSecurity: .plaintext)
       )
     )
 
diff --git a/Sources/GRPCCore/Documentation.docc/Tutorials/Route-Guide/Resources/route-guide-sec06-step09-route-chat.swift b/Sources/GRPCCore/Documentation.docc/Tutorials/Route-Guide/Resources/route-guide-sec06-step09-route-chat.swift
index 401bf06ec..fddc42966 100644
--- a/Sources/GRPCCore/Documentation.docc/Tutorials/Route-Guide/Resources/route-guide-sec06-step09-route-chat.swift
+++ b/Sources/GRPCCore/Documentation.docc/Tutorials/Route-Guide/Resources/route-guide-sec06-step09-route-chat.swift
@@ -5,7 +5,7 @@ extension RouteGuide {
     let client = try GRPCClient(
       transport: .http2NIOPosix(
         target: .ipv4(host: "127.0.0.1", port: 31415),
-        config: .defaults()
+        config: .defaults(transportSecurity: .plaintext)
       )
     )