diff --git a/jenkins/3catJenkinsfileTw b/jenkins/3catJenkinsfileTw
index b36333d..6079d12 100644
--- a/jenkins/3catJenkinsfileTw
+++ b/jenkins/3catJenkinsfileTw
@@ -42,6 +42,10 @@ pipeline {
                     string(credentialsId: 'BSKY_3CAT_APP_PASSWORD', variable: 'BSKY_3CAT_APP_PASSWORD')
                 ]) {
                     sh '''
+                    # 1. Activate the virtual environment in THIS shell
+                    . venv/bin/activate
+                    
+                    # 2. Now run the script (it will use the venv's Python and find 'arrow')
                     python3 twitter2bsky_daemon.py \
                         --twitter-username "$TWITTER_USERNAME" \
                         --twitter-password "$TWITTER_PASSWORD" \