diff --git a/Graphics/Rendering/Chart/Plot/Histogram.hs b/Graphics/Rendering/Chart/Plot/Histogram.hs
--- a/Graphics/Rendering/Chart/Plot/Histogram.hs
+++ b/Graphics/Rendering/Chart/Plot/Histogram.hs
@@ -51,7 +51,10 @@
     , _plot_hist_no_zeros             :: Bool
 
       -- | Override the range of the histogram. If @Nothing@ the
-      -- range of @_plot_hist_values@ is used
+      -- range of @_plot_hist_values@ is used.
+      -- 
+      -- Note that any normalization is always computed over the full
+      -- data set, including samples not falling in the histogram range.
     , _plot_hist_range                :: Maybe (x,x)
 
       -- | Plot vertical lines between bins
diff --git a/chart-histogram.cabal b/chart-histogram.cabal
--- a/chart-histogram.cabal
+++ b/chart-histogram.cabal
@@ -1,5 +1,5 @@
 Name:                chart-histogram
-Version:             0.4.3
+Version:             0.4.4
 Synopsis:            Easily render histograms with Chart
 Description:         A library for rendering histograms with the Chart library
 License:             BSD3
@@ -21,7 +21,7 @@
 
   Build-depends:       base >=4.5 && <4.9,
                        vector >=0.9 && <0.11,
-                       lens >=3.9 && <4.5,
+                       lens >=3.9 && <4.6,
                        data-default-class >=0.0.1 && <0.1,
                        colour >=2.2.1 && <2.4,
                        Chart >=1.0 && <1.4