diff --git a/contrib/jenkins-osmo-bts-octphy.sh b/contrib/jenkins-osmo-bts-octphy.sh
index 4284262..49560ca 100755
--- a/contrib/jenkins-osmo-bts-octphy.sh
+++ b/contrib/jenkins-osmo-bts-octphy.sh
@@ -61,5 +61,6 @@
 done
 
 # build the archive that is going to be copied to the tester
+rm "$base"/*.tgz || true
 cd "$prefix"
 tar czf "$base/osmo-bts-octphy.build-${BUILD_NUMBER}.tgz" *
diff --git a/contrib/jenkins-osmo-bts-sysmo.sh b/contrib/jenkins-osmo-bts-sysmo.sh
index 7870259..52f7593 100755
--- a/contrib/jenkins-osmo-bts-sysmo.sh
+++ b/contrib/jenkins-osmo-bts-sysmo.sh
@@ -65,5 +65,6 @@
 done
 
 # build the archive that is going to be copied to the tester and then to the BTS
+rm "$base"/*.tgz || true
 cd "$prefix_real"
 tar cvzf "$base/osmo-bts-sysmo.build-${BUILD_NUMBER}.tgz" *
diff --git a/contrib/jenkins-osmo-bts-trx.sh b/contrib/jenkins-osmo-bts-trx.sh
index acdcc89..e44cf0a 100755
--- a/contrib/jenkins-osmo-bts-trx.sh
+++ b/contrib/jenkins-osmo-bts-trx.sh
@@ -60,5 +60,6 @@
 done
 
 # build the archive that is going to be copied to the tester
+rm "$base"/*.tgz || true
 cd "$prefix"
 tar czf "$base/osmo-bts-trx.build-${BUILD_NUMBER}.tgz" *
diff --git a/contrib/jenkins-osmo-nitb.sh b/contrib/jenkins-osmo-nitb.sh
index e655082..05d2041 100755
--- a/contrib/jenkins-osmo-nitb.sh
+++ b/contrib/jenkins-osmo-nitb.sh
@@ -59,5 +59,6 @@
 done
 
 # build the archive that is going to be copied to the tester
+rm "$base"/*.tgz || true
 cd "$prefix"
 tar czf "$base/osmo-nitb.build-${BUILD_NUMBER}.tgz" *