diff --git a/buildbot-worker/Dockerfile b/buildbot-worker/Dockerfile
index 5de2f5b..dda2529 100644
--- a/buildbot-worker/Dockerfile
+++ b/buildbot-worker/Dockerfile
@@ -28,7 +28,7 @@ RUN Install-FromArchive -Name 'vcpkg' -url ('https://github.com/microsoft/vcpkg/
 # Install buildbot
 #--------------------------------------------------------------------
 
-ENV BUILDBOT_VERSION 2.10.5
+ENV BUILDBOT_VERSION 4.2.0
 
 RUN Write-Host 'Installing buildbot ...'; `
     pip3 install -q ('buildbot-worker=={0}' -f $env:BUILDBOT_VERSION); `