diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index a02b2fc..d12f6d8 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -28,12 +28,12 @@ repos:
     - id: blackdoc
 
 - repo: https://github.com/charliermarsh/ruff-pre-commit
-  rev: v0.0.272
+  rev: v0.0.287
   hooks:
     - id: ruff
 
 - repo: https://github.com/psf/black
-  rev: 23.3.0
+  rev: 23.7.0
   hooks:
   - id: black
     language_version: python3
@@ -46,11 +46,11 @@ repos:
         - --ignore-words-list=pres
 
 - repo: https://github.com/asottile/add-trailing-comma
-  rev: v2.5.1
+  rev: v3.1.0
   hooks:
     - id: add-trailing-comma
 
 - repo: https://github.com/tox-dev/pyproject-fmt
-  rev: "0.12.1"
+  rev: "1.1.0"
   hooks:
     - id: pyproject-fmt
diff --git a/oceans/RPSstuff.py b/oceans/RPSstuff.py
index 46bd8ff..85db246 100644
--- a/oceans/RPSstuff.py
+++ b/oceans/RPSstuff.py
@@ -490,7 +490,7 @@ def coast2bln(coast, bln_file):
         kk = list(range(ind[k] + 1, ind[k + 1]))
         NP = int(len(kk))
         bln[ind[k], 0] = NP
-        bln[ind[k], 1] = int(1)
+        bln[ind[k], 1] = 1
 
     bln = bln[:-1]
     np.savetxt(bln_file, bln, fmt="%g")
diff --git a/oceans/datasets.py b/oceans/datasets.py
index a5848e6..c856eb6 100644
--- a/oceans/datasets.py
+++ b/oceans/datasets.py
@@ -245,7 +245,7 @@ def etopo_subset(min_lon, max_lon, min_lat, max_lat, tfile=None, smoo=False):
     Based on trondkristiansen contourICEMaps.py
     """
     if tfile is None:
-        tfile = "http://gamone.whoi.edu/thredds/dodsC/usgs/data0/bathy/ETOPO2v2c_f4.nc"
+        tfile = "https://gamone.whoi.edu/thredds/dodsC/usgs/data0/bathy/ETOPO2v2c_f4.nc"
 
     with Dataset(tfile, "r") as etopo:
         lons = etopo.variables["x"][:]