diff --git a/README.md b/README.md
index 479e0452..925907ea 100644
--- a/README.md
+++ b/README.md
@@ -50,11 +50,9 @@ each `jenkins.sh`:
 . ../jenkins-common.sh
 IMAGE_SUFFIX="${IMAGE_SUFFIX:-master}"
 docker_images_require \
-	"debian-stretch-build" \
 	"osmo-stp-$IMAGE_SUFFIX" \
 	"osmo-bsc-$IMAGE_SUFFIX" \
 	"osmo-bts-$IMAGE_SUFFIX" \
-	"debian-stretch-titan" \
 	"ttcn3-bsc-test"
 ```
 
diff --git a/ttcn3-bsc-test/jenkins-sccplite.sh b/ttcn3-bsc-test/jenkins-sccplite.sh
index 36c79d54..7c628db1 100755
--- a/ttcn3-bsc-test/jenkins-sccplite.sh
+++ b/ttcn3-bsc-test/jenkins-sccplite.sh
@@ -3,10 +3,8 @@
 . ../jenkins-common.sh
 IMAGE_SUFFIX="${IMAGE_SUFFIX:-master}"
 docker_images_require \
-	"debian-stretch-build" \
 	"osmo-bsc-$IMAGE_SUFFIX" \
 	"osmo-bts-$IMAGE_SUFFIX" \
-	"debian-stretch-titan" \
 	"ttcn3-bsc-test"
 
 #Make sure NET_NAME doesn't clash with the AoIP BSC test
diff --git a/ttcn3-bsc-test/jenkins.sh b/ttcn3-bsc-test/jenkins.sh
index 44badb5a..7db65d2c 100755
--- a/ttcn3-bsc-test/jenkins.sh
+++ b/ttcn3-bsc-test/jenkins.sh
@@ -3,11 +3,9 @@
 . ../jenkins-common.sh
 IMAGE_SUFFIX="${IMAGE_SUFFIX:-master}"
 docker_images_require \
-	"debian-stretch-build" \
 	"osmo-stp-$IMAGE_SUFFIX" \
 	"osmo-bsc-$IMAGE_SUFFIX" \
 	"osmo-bts-$IMAGE_SUFFIX" \
-	"debian-stretch-titan" \
 	"ttcn3-bsc-test"
 
 mkdir $VOL_BASE_DIR/bsc-tester
diff --git a/ttcn3-bscnat-test/jenkins.sh b/ttcn3-bscnat-test/jenkins.sh
index 1df1a705..4057b444 100755
--- a/ttcn3-bscnat-test/jenkins.sh
+++ b/ttcn3-bscnat-test/jenkins.sh
@@ -3,9 +3,7 @@
 . ../jenkins-common.sh
 IMAGE_SUFFIX="${IMAGE_SUFFIX:-master}"
 docker_images_require \
-	"debian-stretch-build" \
 	"osmo-nitb-$IMAGE_SUFFIX" \
-	"debian-stretch-titan" \
 	"ttcn3-bscnat-test"
 
 
diff --git a/ttcn3-bts-test/jenkins.sh b/ttcn3-bts-test/jenkins.sh
index 83bd1657..4974a344 100755
--- a/ttcn3-bts-test/jenkins.sh
+++ b/ttcn3-bts-test/jenkins.sh
@@ -4,11 +4,9 @@
 IMAGE_SUFFIX="${IMAGE_SUFFIX:-master}"
 # NOTE: there is no osmocom-bb-host-latest, hence always use master!
 docker_images_require \
-	"debian-stretch-build" \
 	"osmo-bsc-$IMAGE_SUFFIX" \
 	"osmo-bts-$IMAGE_SUFFIX" \
 	"osmocom-bb-host-master" \
-	"debian-stretch-titan" \
 	"ttcn3-bts-test"
 
 start_bsc() {
diff --git a/ttcn3-ggsn-test/jenkins.sh b/ttcn3-ggsn-test/jenkins.sh
index a69e6400..72c25e6b 100755
--- a/ttcn3-ggsn-test/jenkins.sh
+++ b/ttcn3-ggsn-test/jenkins.sh
@@ -3,9 +3,7 @@
 . ../jenkins-common.sh
 IMAGE_SUFFIX="${IMAGE_SUFFIX:-master}"
 docker_images_require \
-	"debian-stretch-build" \
 	"osmo-ggsn-$IMAGE_SUFFIX" \
-	"debian-stretch-titan" \
 	"ttcn3-ggsn-test"
 
 mkdir $VOL_BASE_DIR/ggsn-tester
diff --git a/ttcn3-hlr-test/jenkins.sh b/ttcn3-hlr-test/jenkins.sh
index 47ce5a99..74fe429a 100755
--- a/ttcn3-hlr-test/jenkins.sh
+++ b/ttcn3-hlr-test/jenkins.sh
@@ -3,9 +3,7 @@
 . ../jenkins-common.sh
 IMAGE_SUFFIX="${IMAGE_SUFFIX:-master}"
 docker_images_require \
-	"debian-stretch-build" \
 	"osmo-hlr-$IMAGE_SUFFIX" \
-	"debian-stretch-titan" \
 	"ttcn3-hlr-test"
 
 network_create 172.18.10.0/24
diff --git a/ttcn3-mgw-test/jenkins.sh b/ttcn3-mgw-test/jenkins.sh
index 4ebd235a..3b6dd416 100755
--- a/ttcn3-mgw-test/jenkins.sh
+++ b/ttcn3-mgw-test/jenkins.sh
@@ -3,9 +3,7 @@
 . ../jenkins-common.sh
 IMAGE_SUFFIX="${IMAGE_SUFFIX:-master}"
 docker_images_require \
-	"debian-stretch-build" \
 	"osmo-mgw-$IMAGE_SUFFIX" \
-	"debian-stretch-titan" \
 	"ttcn3-mgw-test"
 
 mkdir $VOL_BASE_DIR/mgw-tester
diff --git a/ttcn3-msc-test/jenkins.sh b/ttcn3-msc-test/jenkins.sh
index 805151a1..e701b0d0 100755
--- a/ttcn3-msc-test/jenkins.sh
+++ b/ttcn3-msc-test/jenkins.sh
@@ -3,10 +3,8 @@
 . ../jenkins-common.sh
 IMAGE_SUFFIX="${IMAGE_SUFFIX:-master}"
 docker_images_require \
-	"debian-stretch-build" \
 	"osmo-stp-$IMAGE_SUFFIX" \
 	"osmo-msc-$IMAGE_SUFFIX" \
-	"debian-stretch-titan" \
 	"ttcn3-msc-test"
 
 network_create 172.18.1.0/24
diff --git a/ttcn3-pcu-test/jenkins-sns.sh b/ttcn3-pcu-test/jenkins-sns.sh
index 06403d34..edebd0be 100755
--- a/ttcn3-pcu-test/jenkins-sns.sh
+++ b/ttcn3-pcu-test/jenkins-sns.sh
@@ -3,9 +3,7 @@
 . ../jenkins-common.sh
 IMAGE_SUFFIX="${IMAGE_SUFFIX:-master}"
 docker_images_require \
-	"debian-stretch-build" \
 	"osmo-pcu-$IMAGE_SUFFIX" \
-	"debian-stretch-titan" \
 	"ttcn3-pcu-test"
 
 network_create 172.18.14.0/24
diff --git a/ttcn3-pcu-test/jenkins.sh b/ttcn3-pcu-test/jenkins.sh
index 271f89f1..7942d1ad 100755
--- a/ttcn3-pcu-test/jenkins.sh
+++ b/ttcn3-pcu-test/jenkins.sh
@@ -3,9 +3,7 @@
 . ../jenkins-common.sh
 IMAGE_SUFFIX="${IMAGE_SUFFIX:-master}"
 docker_images_require \
-	"debian-stretch-build" \
 	"osmo-pcu-$IMAGE_SUFFIX" \
-	"debian-stretch-titan" \
 	"ttcn3-pcu-test"
 
 network_create 172.18.13.0/24
diff --git a/ttcn3-remsim-test/jenkins.sh b/ttcn3-remsim-test/jenkins.sh
index 1c2682cb..c5f86928 100755
--- a/ttcn3-remsim-test/jenkins.sh
+++ b/ttcn3-remsim-test/jenkins.sh
@@ -3,7 +3,6 @@
 . ../jenkins-common.sh
 IMAGE_SUFFIX="${IMAGE_SUFFIX:-master}"
 docker_images_require \
-	"debian-stretch-build" \
 	"osmo-remsim-$IMAGE_SUFFIX" \
 	"ttcn3-remsim-test"
 
diff --git a/ttcn3-sccp-test/jenkins.sh b/ttcn3-sccp-test/jenkins.sh
index 242e44ae..f802b2d4 100755
--- a/ttcn3-sccp-test/jenkins.sh
+++ b/ttcn3-sccp-test/jenkins.sh
@@ -4,9 +4,7 @@
 IMAGE_SUFFIX="${IMAGE_SUFFIX:-master}"
 # Always require osmo-stp-master since is the only with sccp_demo_user installed
 docker_images_require \
-	"debian-stretch-build" \
 	"osmo-stp-master" \
-	"debian-stretch-titan" \
 	"ttcn3-sccp-test"
 
 mkdir $VOL_BASE_DIR/sccp-tester
diff --git a/ttcn3-sgsn-test/jenkins.sh b/ttcn3-sgsn-test/jenkins.sh
index 9db295a2..9b77abf5 100755
--- a/ttcn3-sgsn-test/jenkins.sh
+++ b/ttcn3-sgsn-test/jenkins.sh
@@ -3,10 +3,8 @@
 . ../jenkins-common.sh
 IMAGE_SUFFIX="${IMAGE_SUFFIX:-master}"
 docker_images_require \
-	"debian-stretch-build" \
 	"osmo-stp-$IMAGE_SUFFIX" \
 	"osmo-sgsn-$IMAGE_SUFFIX" \
-	"debian-stretch-titan" \
 	"ttcn3-sgsn-test"
 
 network_create 172.18.8.0/24
diff --git a/ttcn3-sip-test/jenkins.sh b/ttcn3-sip-test/jenkins.sh
index 8a1977e0..702a6f5d 100755
--- a/ttcn3-sip-test/jenkins.sh
+++ b/ttcn3-sip-test/jenkins.sh
@@ -3,9 +3,7 @@
 . ../jenkins-common.sh
 IMAGE_SUFFIX="${IMAGE_SUFFIX:-master}"
 docker_images_require \
-	"debian-stretch-build" \
 	"osmo-sip-$IMAGE_SUFFIX" \
-	"debian-stretch-titan" \
 	"ttcn3-sip-test"
 
 network_create 172.18.11.0/24
diff --git a/ttcn3-stp-test/jenkins.sh b/ttcn3-stp-test/jenkins.sh
index bc2d5af7..ba00f309 100755
--- a/ttcn3-stp-test/jenkins.sh
+++ b/ttcn3-stp-test/jenkins.sh
@@ -3,9 +3,7 @@
 . ../jenkins-common.sh
 IMAGE_SUFFIX="${IMAGE_SUFFIX:-master}"
 docker_images_require \
-	"debian-stretch-build" \
 	"osmo-stp-$IMAGE_SUFFIX" \
-	"debian-stretch-titan" \
 	"ttcn3-stp-test"
 
 mkdir $VOL_BASE_DIR/stp-tester