diff --git a/docs/ref/contrib/gis/install/geolibs.txt b/docs/ref/contrib/gis/install/geolibs.txt
index ee1ddad6d3..9462451dff 100644
--- a/docs/ref/contrib/gis/install/geolibs.txt
+++ b/docs/ref/contrib/gis/install/geolibs.txt
@@ -9,7 +9,7 @@ geospatial libraries:
 Program                   Description                           Required                          Supported Versions
 ========================  ====================================  ================================  ===================================
 :doc:`GEOS <../geos>`     Geometry Engine Open Source           Yes                               3.6, 3.5, 3.4
-`PROJ.4`_                 Cartographic Projections library      Yes (PostgreSQL and SQLite only)  4.9, 4.8, 4.7, 4.6, 4.5, 4.4
+`PROJ.4`_                 Cartographic Projections library      Yes (PostgreSQL and SQLite only)  5.2, 5.1, 5.0, 4.x
 :doc:`GDAL <../gdal>`     Geospatial Data Abstraction Library   Yes                               2.3, 2.2, 2.1, 2.0, 1.11
 :doc:`GeoIP <../geoip2>`  IP-based geolocation library          No                                2
 `PostGIS`__               Spatial extensions for PostgreSQL     Yes (PostgreSQL only)             2.4, 2.3, 2.2, 2.1
diff --git a/tests/gis_tests/gdal_tests/test_raster.py b/tests/gis_tests/gdal_tests/test_raster.py
index 3a700cdf9e..040cd84e3a 100644
--- a/tests/gis_tests/gdal_tests/test_raster.py
+++ b/tests/gis_tests/gdal_tests/test_raster.py
@@ -514,10 +514,10 @@ class GDALRasterTests(SimpleTestCase):
         self.assertEqual(target.width, 7)
         self.assertEqual(target.height, 7)
         self.assertEqual(target.bands[0].datatype(), source.bands[0].datatype())
-        self.assertAlmostEqual(target.origin[0], 9124842.791079799)
-        self.assertAlmostEqual(target.origin[1], 1589911.6476407414)
-        self.assertAlmostEqual(target.scale[0], 223824.82664250192)
-        self.assertAlmostEqual(target.scale[1], -223824.82664250192)
+        self.assertAlmostEqual(target.origin[0], 9124842.791079799, 3)
+        self.assertAlmostEqual(target.origin[1], 1589911.6476407414, 3)
+        self.assertAlmostEqual(target.scale[0], 223824.82664250192, 3)
+        self.assertAlmostEqual(target.scale[1], -223824.82664250192, 3)
         self.assertEqual(target.skew, [0, 0])
 
         result = target.bands[0].data()
diff --git a/tests/gis_tests/geos_tests/test_geos.py b/tests/gis_tests/geos_tests/test_geos.py
index 1924ccb356..62589eee9d 100644
--- a/tests/gis_tests/geos_tests/test_geos.py
+++ b/tests/gis_tests/geos_tests/test_geos.py
@@ -1118,7 +1118,7 @@ class GEOSTest(SimpleTestCase, TestDataMixin):
     def test_transform_3d(self):
         p3d = GEOSGeometry('POINT (5 23 100)', 4326)
         p3d.transform(2774)
-        self.assertEqual(p3d.z, 100)
+        self.assertAlmostEqual(p3d.z, 100, 3)
 
     def test_transform_noop(self):
         """ Testing `transform` method (SRID match) """