diff --git a/debian/changelog b/debian/changelog
index c671f9d1b1141bc65c483ef1b6581dd70dffb91d..6084e7f774f65841677da174702ac6a83bf8e40e 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,15 @@
+pressure-vessel (0.20191112.2-0+steamrt1.1) UNRELEASED; urgency=medium
+
+  * Go back to non-native versioning.
+    Versioning pressure-vessel as a native package interacts poorly with
+    the combination of the Open Build Service pseudo-binNMU suffix and the
+    deb-build-snapshot tool used for prereleases:
+    0.20190927.0+7+g1234567+srt1 is less than 0.20190927.0+srt1, so
+    0.20190927.0 would wrongly be preferred over the prerelease at commit
+    1234567, 7 commits later than 0.20190927.0.
+
+ -- Simon McVittie <smcv@collabora.com>  Mon, 11 Nov 2019 19:46:56 +0000
+
 pressure-vessel (0.20191112.1) scout; urgency=medium
 
   * Revert inclusion of libglnx!14.
diff --git a/debian/gitlab-ci.yml b/debian/gitlab-ci.yml
index 96d35422c4657840cabb4fa06e8e49ce2cdea732..c0f7f4ea1cb005347674a46c5f27a667570e2297 100644
--- a/debian/gitlab-ci.yml
+++ b/debian/gitlab-ci.yml
@@ -43,10 +43,6 @@ variables:
     STEAM_RUNTIME_TOOLS_GIT_REPO: https://gitlab-ci-token:${CI_JOB_TOKEN}@gitlab.steamos.cloud/steam/steam-runtime-tools.git
     STEAM_RUNTIME_TOOLS_GIT_BRANCH: master
 
-build:
-    variables:
-        BUILD_IMAGE: docker.internal.steamos.cloud/steamos/package-builder:buster
-
 build:devel:
     stage: build
     image: "${DEVEL_DOCKER_REGISTRY}/${DEVEL_DOCKER_IMAGE}"
diff --git a/debian/source/format b/debian/source/format
index 89ae9db8f88b823b6a7eabf55e203658739da122..163aaf8d82b6c54f23c45f32895dbdfdcc27b047 100644
--- a/debian/source/format
+++ b/debian/source/format
@@ -1 +1 @@
-3.0 (native)
+3.0 (quilt)