diff --git a/os/layers/participant/hooks/live/2000-participant.hook.chroot b/os/layers/participant/hooks/live/2000-participant.hook.chroot
index ae7268e..a10bb88 100755
--- a/os/layers/participant/hooks/live/2000-participant.hook.chroot
+++ b/os/layers/participant/hooks/live/2000-participant.hook.chroot
@@ -32,6 +32,10 @@ for ext in *; do
   fi
 done
 popd
+# Some extensions contain binaries which must be made executable.
+# Because the files are now owned by root, extensions can't do that themselves.
+# This just makes all files executable.
+chmod --recursive +x /usr/local/lib/vscode-extensions/
 
 # Enable codeblocks template.
 sed -i 's|// project wizards|RegisterWizard(wizProject,     _T("soi"),      _T("A SOI task"),   _T("Console"));|' /usr/share/codeblocks/templates/wizard/config.script