diff --git a/README.md b/README.md
index d1246d4f..c0a190b9 100644
--- a/README.md
+++ b/README.md
@@ -42,7 +42,7 @@ installers for all supported operating systems.
 2. Trust Bintray.com's GPG key:
 
     ```sh
-    sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 379CE192D401AB61
+    sudo apt-key adv --keyserver hkps://keyserver.ubuntu.com:443 --recv-keys 379CE192D401AB61
     ```
 
 3. Update and install: