diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 0fff7ee..ac9f3bc 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        python-version: [ "3.11", "3.12", "3.13" ]
+        python-version: [ "3.11", "3.12", "3.13", "3.14" ]
         os: [ windows-latest, ubuntu-latest, macos-latest ]
       fail-fast: false
 
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index e058f9c..77f0578 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -39,7 +39,7 @@ repos:
     - id: add-trailing-comma
 
 - repo: https://github.com/astral-sh/ruff-pre-commit
-  rev: v0.14.10
+  rev: v0.14.14
   hooks:
     - id: ruff
       args: ["--fix", "--show-fixes"]
@@ -67,7 +67,7 @@ repos:
     - id: pyproject-fmt
 
 - repo: https://github.com/woodruffw/zizmor-pre-commit
-  rev: v1.19.0
+  rev: v1.22.0
   hooks:
     - id: zizmor
 
diff --git a/ctd/read.py b/ctd/read.py
index 0e834a7..9b1d47b 100644
--- a/ctd/read.py
+++ b/ctd/read.py
@@ -549,7 +549,7 @@ def rosette_summary(fname: str | Path) -> pd.DataFrame:
     ros["pressure"] = ros.index.to_numpy().astype(float)
     ros["nbf"] = ros["nbf"].astype(int)
     metadata = ros._metadata  # noqa: SLF001
-    ros = ros.set_index("nbf", drop=True, verify_integrity=False)
+    ros = ros.set_index("nbf", drop=True)
     ros._metadata = metadata  # noqa: SLF001
     return ros
 
@@ -564,7 +564,7 @@ def from_castaway_csv(fname: str | Path) -> pd.DataFrame:
     >>> cast.columns
     Index(['depth', 'temperature', 'conductivity', 'specific_conductance',
            'salinity', 'sound_velocity', 'density'],
-          dtype='object')
+          dtype='str')
 
     """
     f = _read_file(fname)
@@ -588,7 +588,7 @@ def from_castaway_csv(fname: str | Path) -> pd.DataFrame:
         _normalize_names(s.split("(")[0]).lower().replace(" ", "_")
         for s in cast.columns
     ]
-    cast = cast.set_index("pressure", drop=True, verify_integrity=False)
+    cast = cast.set_index("pressure", drop=True)
 
     # Add metadata
     meta = [s.replace("%", "").strip().split(",") for s in meta]