diff --git a/src/backends/pyplot.jl b/src/backends/pyplot.jl
index 24323e72..b5f21a23 100644
--- a/src/backends/pyplot.jl
+++ b/src/backends/pyplot.jl
@@ -84,6 +84,7 @@ function _initialize_backend(::PyPlotBackend)
         export PyPlot
         const pycolors = PyPlot.pyimport("matplotlib.colors")
         const pypath = PyPlot.pyimport("matplotlib.path")
+        const mplot3d = PyPlot.pyimport("mpl_toolkits.mplot3d")
         const pypatches = PyPlot.pyimport("matplotlib.patches")
         const pyfont = PyPlot.pyimport("matplotlib.font_manager")
         const pyticker = PyPlot.pyimport("matplotlib.ticker")