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
@@ -32,4 +32,4 @@
    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.]
+     buckets: [0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0]