diff --git a/Jenkinsfile b/Jenkinsfile
index c90352f85..e9828b33e 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -1,9 +1,12 @@
 // https://stackoverflow.com/questions/40760716/jenkins-abort-running-build-if-new-one-is-started
-def buildNumber = env.BUILD_NUMBER as int
-if (buildNumber > 1) {
-	milestone(buildNumber - 1)
+// We should only abort older jobs in PR branches, so we have a nice CI history in "master" and "devel".
+if (env.BRANCH_NAME != "master" && env.BRANCH_NAME != "devel") {
+	def buildNumber = env.BUILD_NUMBER as int
+	if (buildNumber > 1) {
+		milestone(buildNumber - 1)
+	}
+	milestone(buildNumber)
 }
-milestone(buildNumber)
 
 def runStages() {
 	try {
diff --git a/Jenkinsfile.benchmarks b/Jenkinsfile.benchmarks
index 53feedc50..2a1b61919 100644
--- a/Jenkinsfile.benchmarks
+++ b/Jenkinsfile.benchmarks
@@ -1,9 +1,12 @@
 // https://stackoverflow.com/questions/40760716/jenkins-abort-running-build-if-new-one-is-started
-def buildNumber = env.BUILD_NUMBER as int
-if (buildNumber > 1) {
-	milestone(buildNumber - 1)
+// We should only abort older jobs in PR branches, so we have a nice CI history in "master" and "devel".
+if (env.BRANCH_NAME != "master" && env.BRANCH_NAME != "devel") {
+	def buildNumber = env.BUILD_NUMBER as int
+	if (buildNumber > 1) {
+		milestone(buildNumber - 1)
+	}
+	milestone(buildNumber)
 }
-milestone(buildNumber)
 
 node("metal") {
 	withEnv(["NPROC=${sh(returnStdout: true, script: 'nproc').trim()}"]) {