diff --git a/dotfiles/ssh/config b/dotfiles/ssh/config
index 1dea896..c1e34ac 100644
--- a/dotfiles/ssh/config
+++ b/dotfiles/ssh/config
@@ -14,6 +14,10 @@ CanonicalizeMaxDots         0
 Host *.*
   CheckHostIP                 yes
 
+Host *.cloudshell.dev
+  # Cloudshell hostnames are too long for unix sockets
+  ControlMaster no
+
 Match canonical all
   CheckHostIP                 no
   ControlMaster               auto