diff --git a/bullseye/preferences.d/entrouvert-pgdg b/bullseye/preferences.d/entrouvert-pgdg
new file mode 100644
index 0000000..7e69c30
--- /dev/null
+++ b/bullseye/preferences.d/entrouvert-pgdg
@@ -0,0 +1,6 @@
+# this file is installed by package entrouvert-archive, do not edit
+# do *not* install packages from apt.postgresql.org automatically
+
+Package: *
+Pin: release o=apt.postgresql.org
+Pin-Priority: 200
diff --git a/buster/preferences.d/entrouvert-pgdg b/buster/preferences.d/entrouvert-pgdg
new file mode 100644
index 0000000..7e69c30
--- /dev/null
+++ b/buster/preferences.d/entrouvert-pgdg
@@ -0,0 +1,6 @@
+# this file is installed by package entrouvert-archive, do not edit
+# do *not* install packages from apt.postgresql.org automatically
+
+Package: *
+Pin: release o=apt.postgresql.org
+Pin-Priority: 200