diff --git a/docs/adapters/index.md b/docs/adapters/index.md
index 3bab1263f..7cabcbf75 100644
--- a/docs/adapters/index.md
+++ b/docs/adapters/index.md
@@ -1,7 +1,7 @@
 ---
 layout: documentation
 title: "Adapters"
-permalink: /adapters
+permalink: /adapters/
 order: 2
 ---
 
diff --git a/docs/middleware/index.md b/docs/middleware/index.md
index 5630c0244..7048fa99e 100644
--- a/docs/middleware/index.md
+++ b/docs/middleware/index.md
@@ -1,7 +1,7 @@
 ---
 layout: documentation
 title: "Middleware"
-permalink: /middleware
+permalink: /middleware/
 next_name: Available Middleware
 next_link: ./list
 order: 3
diff --git a/docs/usage/index.md b/docs/usage/index.md
index 37ec70e80..9ece9a527 100644
--- a/docs/usage/index.md
+++ b/docs/usage/index.md
@@ -1,7 +1,7 @@
 ---
 layout: documentation
 title: "Usage"
-permalink: /usage
+permalink: /usage/
 next_name: Customizing the Request
 next_link: ./customize
 order: 1