diff --git a/Jenkinsfile b/Jenkinsfile
index 62b7581438baaf8aac8698ba0de69113e06b403c..bdf48fa2a7e624d2db49b93ce06dfdec134a0777 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -28,7 +28,7 @@ pipeline {
       agent { label "master"}
       steps {
         sh "git config core.whitespace -blank-at-eof"
-        sh "git diff --check `git merge-base origin/master HEAD` HEAD -- . ':!*.md' ':!*.pandoc' ':!*.asc'"
+        sh "git diff --check `git merge-base origin/master HEAD` HEAD -- . ':!*.md' ':!*.pandoc' ':!*.asc' ':!*.dat'"
         dir('scripts/jenkins') { stash(name: 'known_hosts', includes: 'known_hosts') }
         ciSkip action: 'check' // Check for [ci skip] or [web] commit message.