diff --git a/docker/conf/prometheus-statsd-mapping.yml b/docker/conf/prometheus-statsd-mapping.yml
--- a/docker/conf/prometheus-statsd-mapping.yml
+++ b/docker/conf/prometheus-statsd-mapping.yml
@@ -25,3 +25,11 @@
     - 2700
     - 3600
     - 7200
+
+mappings:
+ - match: "(.*_percent)"
+   name: "${1}"
+   match_type: regex
+   observer_type: histogram
+   histogram_options:
+     buckets: [0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.]