diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7fa63580..9ebb893a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.6, 3.7, 3.8, 3.9]
+        python-version: [3.7, 3.8, 3.9]
 
     steps:
       - uses: actions/checkout@v2
diff --git a/CHANGES.md b/CHANGES.md
index 28807c9e..b678fc57 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,3 +1,10 @@
+# 3.0.0 (TDB)
+
+**breaking changes**
+
+* update morecantile requirement to version >=3.0 (https://github.com/cogeotiff/rio-tiler/pull/418)
+* remove python 3.6 support (https://github.com/cogeotiff/rio-tiler/pull/418)
+
 # 2.1.2 (2021-08-10)
 
 * update type information for mosaics functions (https://github.com/cogeotiff/rio-tiler/pull/409)
diff --git a/rio_tiler/io/base.py b/rio_tiler/io/base.py
index 6431b000..ad03542c 100644
--- a/rio_tiler/io/base.py
+++ b/rio_tiler/io/base.py
@@ -70,7 +70,7 @@ def tile_exists(self, tile_z: int, tile_x: int, tile_y: int) -> bool:
 
         """
         tile = Tile(x=tile_x, y=tile_y, z=tile_z)
-        tile_bounds = self.tms.bounds(*tile)
+        tile_bounds = self.tms.bounds(tile)
         return (
             (tile_bounds[0] < self.bounds[2])
             and (tile_bounds[2] > self.bounds[0])
diff --git a/rio_tiler/io/cogeo.py b/rio_tiler/io/cogeo.py
index db71bb1d..a7e62d11 100644
--- a/rio_tiler/io/cogeo.py
+++ b/rio_tiler/io/cogeo.py
@@ -128,10 +128,10 @@ def __exit__(self, exc_type, exc_value, traceback):
 
     def get_zooms(self, tilesize: int = 256) -> Tuple[int, int]:
         """Calculate raster min/max zoom level."""
-        if self.dataset.crs != self.tms.crs:
+        if self.dataset.crs != self.tms.rasterio_crs:
             dst_affine, w, h = calculate_default_transform(
                 self.dataset.crs,
-                self.tms.crs,
+                self.tms.rasterio_crs,
                 self.dataset.width,
                 self.dataset.height,
                 *self.dataset.bounds,
@@ -281,7 +281,7 @@ def tile(
                 f"Tile {tile_z}/{tile_x}/{tile_y} is outside {self.filepath} bounds"
             )
 
-        tile_bounds = self.tms.xy_bounds(*Tile(x=tile_x, y=tile_y, z=tile_z))
+        tile_bounds = self.tms.xy_bounds(Tile(x=tile_x, y=tile_y, z=tile_z))
         if tile_buffer:
             x_res = (tile_bounds[2] - tile_bounds[0]) / tilesize
             y_res = (tile_bounds[3] - tile_bounds[1]) / tilesize
@@ -295,7 +295,7 @@ def tile(
 
         return self.part(
             tile_bounds,
-            dst_crs=self.tms.crs,
+            dst_crs=self.tms.rasterio_crs,
             bounds_crs=None,
             height=tilesize,
             width=tilesize,
diff --git a/setup.py b/setup.py
index 47f1ab8d..afc953c7 100644
--- a/setup.py
+++ b/setup.py
@@ -11,7 +11,7 @@
     "boto3",
     "numexpr",
     "numpy",
-    "morecantile>=2.1,<2.2",
+    "morecantile>=3.0.0a0,<3.1",
     "pydantic",
     "pystac>=0.5.3",
     "rasterio>=1.1.7",
@@ -21,13 +21,19 @@
 ]
 
 extra_reqs = {
-    "test": ["pytest", "pytest-asyncio", "pytest-benchmark", "pytest-cov", "rio-cogeo"],
+    "test": [
+        "pytest",
+        "pytest-asyncio",
+        "pytest-benchmark",
+        "pytest-cov",
+        "rio-cogeo @ git+https://github.com/cogeotiff/rio-cogeo.git@morecantileV3",  # TODO: replace with rio-cogeo>=3.0
+    ],
     "dev": [
         "pytest",
         "pytest-benchmark",
         "pytest-cov",
         "pytest-asyncio",
-        "rio-cogeo",
+        "rio-cogeo @ git+https://github.com/cogeotiff/rio-cogeo.git@morecantileV3",  # TODO: replace with rio-cogeo>=3.0
         "pre-commit",
     ],
     "docs": ["nbconvert", "mkdocs", "mkdocs-material", "pygments", "mkdocs-jupyter"],
@@ -36,7 +42,7 @@
 setup(
     name="rio-tiler",
     version="2.1.2",
-    python_requires=">=3.6",
+    python_requires=">=3.7",
     description="User friendly Rasterio plugin to read raster datasets.",
     long_description=readme,
     long_description_content_type="text/markdown",
@@ -47,7 +53,6 @@
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.7",
-        "Programming Language :: Python :: 3.6",
         "Topic :: Scientific/Engineering :: GIS",
     ],
     keywords="cog cogeotiff raster map tiles gdal rasterio raster-processing slippy-map",
diff --git a/tests/fixtures/cog_cmap.tif b/tests/fixtures/cog_cmap.tif
index 7cb1ffc5..f2825207 100644
Binary files a/tests/fixtures/cog_cmap.tif and b/tests/fixtures/cog_cmap.tif differ
diff --git a/tests/fixtures/cog_dateline.tif b/tests/fixtures/cog_dateline.tif
index f146136e..27918301 100644
Binary files a/tests/fixtures/cog_dateline.tif and b/tests/fixtures/cog_dateline.tif differ
diff --git a/tests/test_io_cogeo.py b/tests/test_io_cogeo.py
index 4cd60058..ec3a037d 100644
--- a/tests/test_io_cogeo.py
+++ b/tests/test_io_cogeo.py
@@ -173,7 +173,21 @@ def test_metadata_valid():
     with COGReader(COG_CMAP) as cog:
         assert cog.colormap
         b1_stats = cog.metadata().statistics["1"]
-        assert b1_stats.histogram[1] == list(range(20))
+        assert b1_stats.histogram[1] == [
+            0.0,
+            1.0,
+            2.0,
+            3.0,
+            4.0,
+            5.0,
+            6.0,
+            7.0,
+            8.0,
+            10.0,
+            11.0,
+            12.0,
+            13.0,
+        ]
 
 
 def test_tile_valid_default():
@@ -655,10 +669,10 @@ def test_tile_read_extmask():
 def test_dateline():
     """Read tile from data crossing the antimeridian."""
     with COGReader(COG_DLINE) as cog:
-        img = cog.tile(1, 42, 7, tilesize=64)
+        img = cog.tile(0, 84, 8, tilesize=64)
         assert img.data.shape == (1, 64, 64)
 
-        img = cog.tile(127, 42, 7, tilesize=64)
+        img = cog.tile(255, 84, 8, tilesize=64)
         assert img.data.shape == (1, 64, 64)
 
 
diff --git a/tests/test_reader.py b/tests/test_reader.py
index dfc9c0ba..e3f490db 100644
--- a/tests/test_reader.py
+++ b/tests/test_reader.py
@@ -379,18 +379,6 @@ def test_point():
         with pytest.raises(PointOutsideBounds):
             reader.point(src_dst, [810000, 4100000], coord_crs=src_dst.crs)
 
-    with rasterio.open(COG_CMAP) as src_dst:
-        # Should return None when reading masked pixel
-        assert not reader.point(src_dst, [-95.530, 19.8882])[0]
-
-        # Should return value when not using Masked
-        assert reader.point(src_dst, [-95.530, 19.8882], masked=False)[0] == 0
-
-        # Checking nodata overwrite
-        assert (
-            reader.point(src_dst, [-95.530, 19.8882], masked=True, nodata=100)[0] == 0
-        )
-
     with rasterio.open(S3_MASK_PATH) as src_dst:
         # Test with COG + internal mask
         assert not reader.point(src_dst, [-104.7753105, 38.953548])[0]
@@ -406,7 +394,7 @@ def test_metadata():
     """Should return correct metadata."""
     with rasterio.open(COG_CMAP) as src_dst:
         meta = reader.metadata(src_dst)
-        assert meta["dtype"] == "int8"
+        assert meta["dtype"] == "uint8"
         assert meta["colorinterp"] == ["palette"]
         assert not meta.get("scale")
         assert not meta.get("ofsset")
diff --git a/tox.ini b/tox.ini
index b59aab9d..2c5d58a3 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py36,py37,py38,p39
+envlist = py37,py38,p39
 
 [testenv]
 extras = test