diff --git a/app/githop.go b/app/githop.go
index dff1465..6202212 100644
--- a/app/githop.go
+++ b/app/githop.go
@@ -41,8 +41,8 @@ func init() {
 	router = mux.NewRouter()
 	router.HandleFunc("/", indexHandler).Name("index")
 
-	router.HandleFunc("/session/sign-in", signInHandler).Name("sign-in")
-	router.HandleFunc("/session/sign-out", signOutHandler).Name("sign-out")
+	router.HandleFunc("/session/sign-in", signInHandler).Name("sign-in").Methods("POST")
+	router.HandleFunc("/session/sign-out", signOutHandler).Name("sign-out").Methods("POST")
 	router.HandleFunc("/github/callback", githubOAuthCallbackHandler)
 
 	router.HandleFunc("/digest/view", viewDigestHandler).Name("view-digest")
diff --git a/app/templates/index-signed-out.html b/app/templates/index-signed-out.html
index ff675c6..c067897 100644
--- a/app/templates/index-signed-out.html
+++ b/app/templates/index-signed-out.html
@@ -2,8 +2,8 @@
 
 {{define "body"}}
 
-<a href="{{routeUrl "sign-in"}}">
-  Sign In
-</a>
+<form method="POST" action="{{routeUrl "sign-in"}}">
+  <input type="submit" value="Sign In with GitHub">
+</form>
 
 {{end}}
diff --git a/app/templates/index.html b/app/templates/index.html
index b4d71fd..86b5e8e 100644
--- a/app/templates/index.html
+++ b/app/templates/index.html
@@ -15,9 +15,9 @@
          height="20"
          border="0">{{.User.Login}}
   </a>.
-  <a href="{{routeUrl "sign-out"}}">
-    Sign Out
-  </a>
+  <form method="POST" action="{{routeUrl "sign-out"}}">
+    <input type="submit" value="Sign Out">
+  </form>
 </p>
 
 <div id="primary-actions">