diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -82,77 +82,77 @@
 [![quiver][img_quiver]][url_quiver]
 [![pie][img_pie]][url_pie]
 
-[img_pcolorlog]: https://i.imgur.com/O8hU7Rl.png "pcolorlog"
-[url_pcolorlog]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L495
-[img_griddata]: https://i.imgur.com/Lh2xOPf.png "griddata"
-[url_griddata]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L602
-[img_streamplot]: https://i.imgur.com/AveIggT.png "streamplot"
-[url_streamplot]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L582
-[img_hist2DLog]: https://i.imgur.com/PnPyJzO.png "hist2DLog"
-[url_hist2DLog]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L275
-[img_cumulative]: https://i.imgur.com/W9JinZC.png "cumulative"
-[url_cumulative]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L217
-[img_eventplot]: https://i.imgur.com/2chP6qg.png "eventplot"
-[url_eventplot]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L280
-[img_quiver]: https://i.imgur.com/7G7r9gu.png "quiver"
-[url_quiver]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L423
-[img_labelled-histogram]: https://i.imgur.com/cOCIlpy.png "labelled-histogram"
-[url_labelled-histogram]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L226
-[img_line-options]: https://i.imgur.com/0Jr83hl.png "line-options"
-[url_line-options]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L249
-[img_violinplot]: https://i.imgur.com/MaWL0BD.png "violinplot"
-[url_violinplot]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L298
-[img_density]: https://i.imgur.com/v7GoIno.png "density"
-[url_density]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L241
-[img_tex]: https://i.imgur.com/liZci2C.png "tex"
-[url_tex]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L259
-[img_scatterhist]: https://i.imgur.com/DG3obq8.png "scatterhist"
-[url_scatterhist]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L305
-[img_boxplot]: https://i.imgur.com/aaoMEql.png "boxplot"
-[url_boxplot]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L292
-[img_histogram]: https://i.imgur.com/yO6dxEO.png "histogram"
-[url_histogram]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L214
-[img_images]: https://i.imgur.com/3ZqQDxR.png "images"
-[url_images]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L482
-[img_polar]: https://i.imgur.com/BTXgvqa.png "polar"
-[url_polar]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L450
-[img_histMulti]: https://i.imgur.com/hO2CFGQ.png "histMulti"
-[url_histMulti]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L334
-[img_annotation]: https://i.imgur.com/cPSB8BX.png "annotation"
-[url_annotation]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L539
-[img_corr]: https://i.imgur.com/fh4Bv2X.png "corr"
-[url_corr]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L254
-[img_scatter]: https://i.imgur.com/qg7W3oc.png "scatter"
-[url_scatter]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L219
-[img_hinton]: https://i.imgur.com/RPkTFIJ.png "hinton"
-[url_hinton]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L380
-[img_quiver-fancy]: https://i.imgur.com/VQ5RrfJ.png "quiver-fancy"
-[url_quiver-fancy]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L434
-[img_quadratic]: https://i.imgur.com/fs96snF.png "quadratic"
-[url_quadratic]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L245
-[img_line-function]: https://i.imgur.com/5REiBVO.png "line-function"
-[url_line-function]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L243
-[img_integral]: https://i.imgur.com/OxGr14f.png "integral"
-[url_integral]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L396
-[img_contour]: https://i.imgur.com/kMxGGot.png "contour"
-[url_contour]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L224
-[img_projections]: https://i.imgur.com/laubT7H.png "projections"
-[url_projections]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L247
-[img_legend]: https://i.imgur.com/EmpXjUY.png "legend"
-[url_legend]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L270
-[img_spines]: https://i.imgur.com/fc9xwh5.png "spines"
-[url_spines]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L352
-[img_density-bandwidth]: https://i.imgur.com/e48WAPS.png "density-bandwidth"
-[url_density-bandwidth]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L238
-[img_bivariateNormal]: https://i.imgur.com/ngX1N2R.png "bivariateNormal"
-[url_bivariateNormal]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L465
-[img_pie]: https://i.imgur.com/DSRqr14.png "pie"
-[url_pie]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L516
-[img_show-matrix]: https://i.imgur.com/bd6x6Es.png "show-matrix"
-[url_show-matrix]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L267
-[img_hists]: https://i.imgur.com/hJaxZJt.png "hists"
-[url_hists]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L371
-[img_errorbar]: https://i.imgur.com/ooTcL40.png "errorbar"
-[url_errorbar]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L287
-[img_stacked]: https://i.imgur.com/TIqlAtR.png "stacked"
-[url_stacked]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L523
+[img_quadratic]: https://i.imgur.com/E4AafPD.png "quadratic"
+[url_quadratic]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L248
+[img_labelled-histogram]: https://i.imgur.com/lCVEpge.png "labelled-histogram"
+[url_labelled-histogram]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L229
+[img_contour]: https://i.imgur.com/KoAIf9Z.png "contour"
+[url_contour]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L227
+[img_eventplot]: https://i.imgur.com/UMT1yku.png "eventplot"
+[url_eventplot]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L285
+[img_bivariateNormal]: https://i.imgur.com/fTSfEzo.png "bivariateNormal"
+[url_bivariateNormal]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L470
+[img_legend]: https://i.imgur.com/X46KiUJ.png "legend"
+[url_legend]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L275
+[img_streamplot]: https://i.imgur.com/IfHLmkC.png "streamplot"
+[url_streamplot]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L587
+[img_scatter]: https://i.imgur.com/dceKS4I.png "scatter"
+[url_scatter]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L222
+[img_hist2DLog]: https://i.imgur.com/2fL8oEX.png "hist2DLog"
+[url_hist2DLog]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L280
+[img_cumulative]: https://i.imgur.com/u5I8NYF.png "cumulative"
+[url_cumulative]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L220
+[img_stacked]: https://i.imgur.com/rWIyizX.png "stacked"
+[url_stacked]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L528
+[img_images]: https://i.imgur.com/R1fhDXC.png "images"
+[url_images]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L487
+[img_errorbar]: https://i.imgur.com/gi0zEiz.png "errorbar"
+[url_errorbar]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L292
+[img_show-matrix]: https://i.imgur.com/ajY0A9l.png "show-matrix"
+[url_show-matrix]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L272
+[img_line-options]: https://i.imgur.com/Fahp7QA.png "line-options"
+[url_line-options]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L252
+[img_quiver-fancy]: https://i.imgur.com/NsOFHhx.png "quiver-fancy"
+[url_quiver-fancy]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L439
+[img_annotation]: https://i.imgur.com/9tdHiaT.png "annotation"
+[url_annotation]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L544
+[img_integral]: https://i.imgur.com/PkepIKR.png "integral"
+[url_integral]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L401
+[img_quiver]: https://i.imgur.com/TcayDLc.png "quiver"
+[url_quiver]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L428
+[img_projections]: https://i.imgur.com/IlK7Oy3.png "projections"
+[url_projections]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L250
+[img_density]: https://i.imgur.com/KS2OhbH.png "density"
+[url_density]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L244
+[img_griddata]: https://i.imgur.com/SH83pJK.png "griddata"
+[url_griddata]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L607
+[img_hinton]: https://i.imgur.com/m9a4IwL.png "hinton"
+[url_hinton]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L385
+[img_scatterhist]: https://i.imgur.com/9ZIVotE.png "scatterhist"
+[url_scatterhist]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L310
+[img_violinplot]: https://i.imgur.com/iBOfnuL.png "violinplot"
+[url_violinplot]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L303
+[img_histMulti]: https://i.imgur.com/FxEI3EI.png "histMulti"
+[url_histMulti]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L339
+[img_spines]: https://i.imgur.com/BryQOY9.png "spines"
+[url_spines]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L357
+[img_corr]: https://i.imgur.com/GnBpDJL.png "corr"
+[url_corr]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L257
+[img_pie]: https://i.imgur.com/ljgWXf6.png "pie"
+[url_pie]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L521
+[img_hists]: https://i.imgur.com/KurE2Sr.png "hists"
+[url_hists]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L376
+[img_tex]: https://i.imgur.com/bR8r579.png "tex"
+[url_tex]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L262
+[img_histogram]: https://i.imgur.com/X37Rmy4.png "histogram"
+[url_histogram]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L217
+[img_line-function]: https://i.imgur.com/zkpfQqW.png "line-function"
+[url_line-function]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L246
+[img_density-bandwidth]: https://i.imgur.com/Qgjvrox.png "density-bandwidth"
+[url_density-bandwidth]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L241
+[img_boxplot]: https://i.imgur.com/KigvYSc.png "boxplot"
+[url_boxplot]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L297
+[img_polar]: https://i.imgur.com/4DAOrF1.png "polar"
+[url_polar]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L455
+[img_pcolorlog]: https://i.imgur.com/ZLUoUqy.png "pcolorlog"
+[url_pcolorlog]: https://github.com/abarbu/matplotlib-haskell/blob/master/test/Spec.hs#L500
diff --git a/imgs/contour.png b/imgs/contour.png
Binary files a/imgs/contour.png and b/imgs/contour.png differ
diff --git a/matplotlib.cabal b/matplotlib.cabal
--- a/matplotlib.cabal
+++ b/matplotlib.cabal
@@ -1,5 +1,5 @@
 name:                matplotlib
-version:             0.4.1
+version:             0.4.3
 synopsis:            Bindings to Matplotlib; a Python plotting library
 description:
     Matplotlib is probably the most full featured plotting library out there.
diff --git a/src/Graphics/Matplotlib.hs b/src/Graphics/Matplotlib.hs
--- a/src/Graphics/Matplotlib.hs
+++ b/src/Graphics/Matplotlib.hs
@@ -219,7 +219,7 @@
 
 -- | Enable or disable TeX
 setTeX :: Bool -> Matplotlib
-setTeX b = mp # "matplotlib.rcParams['text.usetex'] = " # b
+setTeX b = mp # "plot.rc('text', usetex="# b #")"
 
 -- | Enable or disable unicode
 setUnicode :: Bool -> Matplotlib
diff --git a/src/Graphics/Matplotlib/Internal.hs b/src/Graphics/Matplotlib/Internal.hs
--- a/src/Graphics/Matplotlib/Internal.hs
+++ b/src/Graphics/Matplotlib/Internal.hs
@@ -303,7 +303,7 @@
          (\codeFile codeHandle -> do
              forM_ codeStr (hPutStrLn codeHandle)
              hClose codeHandle
-             Right <$> readProcess "/usr/bin/python3" [codeFile] ""))
+             Right <$> readProcess "/usr/bin/env" ["python3", codeFile] ""))
          (\e -> return $ Left $ show (e :: IOException))
 
 pyBackend backend = "matplotlib.use('" ++ backend ++ "')"
diff --git a/test/Spec.hs b/test/Spec.hs
--- a/test/Spec.hs
+++ b/test/Spec.hs
@@ -257,11 +257,13 @@
         (ys :: [Double]) = take 100 normals
 
 -- | http://matplotlib.org/examples/pylab_examples/tex_unicode_demo.html
-mtex = plotMapLinear cos 0 1 100
-  % setTeX True
+mtex = setTeX True
   % setUnicode True
+  % figure
+  % addSubplot 1 1 1
+  % plotMapLinear cos 0 1 100
   % xlabel [r|\textbf{time (s)}|]
-  % ylabel [r|\textit{Velocity (\u00B0/sec)}|] @@ [o2 "fontsize" 16]
+  % ylabel "\\textit{Velocity (°/sec)}" @@ [o2 "fontsize" 16]
   % title [r|\TeX\ is Number $\displaystyle\sum_{n=1}^\infty\frac{-e^{i\pi}}{2^n}$!"|] @@ [o2 "fontsize" 16, o2 "color" "r"]
   % grid True