diff --git a/hieradata/org/lsst/role/foreman.yaml b/hieradata/org/lsst/role/foreman.yaml
index 5f69520618..3e13c52c47 100644
--- a/hieradata/org/lsst/role/foreman.yaml
+++ b/hieradata/org/lsst/role/foreman.yaml
@@ -129,6 +129,7 @@ postgresql::server::config_entries:
   shared_buffers: "2GB"
   work_mem: "8MB"
   autovacuum_vacuum_cost_limit: 2000
+  log_min_duration_statement: 10000  # log slow queries >= 10s
 profile::core::puppet_master::enable_puppetdb: true
 puppet::agent: true
 puppet::environment: "production"  # always overridden via enc