title: Heroku: django.core.exceptions.ImproperlyConfigured: Could not find the GDAL
body: <p>I'm trying to run geodjango application on heroku and i added a build pack to make <code>gdal</code> available</p>
  
  <p><a href="https://github.com/cyberdelia/heroku-geo-buildpack.git" rel="nofollow noreferrer">https://github.com/cyberdelia/heroku-geo-buildpack.git</a>. During push it's says that <code>gdal</code> and other geotools successfully installed</p>
  
  <pre><code>remote: -----&gt; geos/gdal/proj app detected
  remote:        Using geos version: 3.6.1
  remote:        Using gdal version: 2.1.3
  remote:        Using proj version: 4.9.3
  remote: -----&gt; Vendoring geo libraries done
  remote: -----&gt; Python app detected
  remote:  !     The latest version of Python 3 is python-3.6.4 (you are using python-3.6.2, which is unsupported).
  remote:  !     We recommend upgrading by specifying the latest version (python-3.6.4).
  remote:        Learn More: https://devcenter.heroku.com/articles/python-runtimes
  remote: -----&gt; Installing requirements with pip
  remote:
  remote: -----&gt; $ python manage.py collectstatic --noinput
  remote:        1018 static files copied to '/tmp/build_2e0a13e9519778105269a34/test/staticfiles', 1158 post-processed.
  remote:
  remote: -----&gt; Discovering process types
  remote:        Procfile declares types -&gt; web
  remote:
  remote: -----&gt; Compressing...
  remote:        Done: 235.8M
  remote: -----&gt; Launching...
  remote:        Released v60
  remote:        https://test.herokuapp.com deployed to Heroku
  remote:
  remote: Verifying deploy... done.
  </code></pre>
  
  <p>When i request page it says that application error.</p>
  
  <p>from <code>heroku logs</code></p>
  
  <pre><code>2018-03-19T14:25:00.614100+00:00 app[web.1]:     from django.contrib.gis.gdal.prototypes import ds as vcapi, raster as rcapi
  2018-03-19T14:25:00.614103+00:00 app[web.1]:     from django.contrib.gis.gdal.libgdal import GDAL_VERSION, lgdal
  2018-03-19T14:25:00.614104+00:00 app[web.1]:   File "/app/.heroku/python/lib/python3.6/site-packages/django/contrib/gis/gdal/libgdal.py", line 43, in &lt;module&gt;
  2018-03-19T14:25:00.614106+00:00 app[web.1]:     % '", "'.join(lib_names)
  2018-03-19T14:25:00.614813+00:00 app[web.1]: [2018-03-19 14:25:00 +0000] [9] [INFO] Worker exiting (pid: 9)
  2018-03-19T14:25:00.746744+00:00 app[web.1]: [2018-03-19 14:25:00 +0000] [4] [INFO] Shutting down: Master
  2018-03-19T14:25:00.746839+00:00 app[web.1]: [2018-03-19 14:25:00 +0000] [4] [INFO] Reason: Worker failed to boot.
  2018-03-19T14:25:00.614110+00:00 app[web.1]: django.core.exceptions.ImproperlyConfigured: Could not find the GDAL library (tried "gdal", "GDAL", "gdal2.2.0", "gdal2.1.0", "gdal2.0.0", "gdal1.11.0", "gdal1.10.0", "gdal1.9.0"). Is GDAL installed? If it is, try setting GDAL_LIBRARY_PATH in your settings.&gt;
  </code></pre>
  
  <p>Should i specify some path in settings or may be i'm using incompatible versions? (i'm using <code>Django==2.0.2</code>)</p>