diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index f714430c..1c1eb9ea 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -5,9 +5,6 @@ concurrency:
   group: ${{ github.head_ref || github.run_id }}
   cancel-in-progress: true
 
-env:
-  CONDA_EXE: mamba
-
 on:
   push:
     branches:
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 026a3f29..fd2fe700 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -33,18 +33,18 @@ repos:
     hooks:
     -   id: sort-all
 -   repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.3.1
+    rev: v0.3.2
     hooks:
       - id: ruff-format
       - id: ruff
         args: [--unsafe-fixes]
 -   repo: https://github.com/dosisod/refurb
-    rev: v1.28.0
+    rev: v2.0.0
     hooks:
     -   id: refurb
         args: [--ignore, FURB126]
 -   repo: https://github.com/pre-commit/mirrors-mypy
-    rev: v1.8.0
+    rev: v1.9.0
     hooks:
     -   id: mypy
         additional_dependencies: [
@@ -80,8 +80,6 @@ repos:
 -   repo: https://github.com/nbQA-dev/nbQA
     rev: 1.8.4
     hooks:
-    -   id: nbqa-black
-    -   id: nbqa-isort
     -   id: nbqa-mypy
         args: [--ignore-missing-imports]
 -   repo: https://github.com/kynan/nbstripout
diff --git a/src/_pytask/_hashlib.py b/src/_pytask/_hashlib.py
index a3c4edcf..ceab0134 100644
--- a/src/_pytask/_hashlib.py
+++ b/src/_pytask/_hashlib.py
@@ -232,5 +232,5 @@ def hash_value(value: Any) -> int | str:
     if isinstance(value, str):
         value = value.encode()
     if isinstance(value, bytes):
-        return str(hashlib.sha256(value).hexdigest())
+        return hashlib.sha256(value).hexdigest()
     return hash(value)
diff --git a/src/_pytask/data_catalog.py b/src/_pytask/data_catalog.py
index ec0a6d67..f59c2040 100644
--- a/src/_pytask/data_catalog.py
+++ b/src/_pytask/data_catalog.py
@@ -99,7 +99,7 @@ def add(self, name: str, node: PNode | None = None) -> None:
             raise TypeError(msg)
 
         if node is None:
-            filename = str(hashlib.sha256(name.encode()).hexdigest())
+            filename = hashlib.sha256(name.encode()).hexdigest()
             if isinstance(self.default_node, PPathNode):
                 self.entries[name] = self.default_node(
                     name=name, path=self.path / f"{filename}.pkl"
diff --git a/tests/conftest.py b/tests/conftest.py
index 673d0b04..b15c9aaa 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -55,7 +55,7 @@ class SysPathsSnapshot:
     """A snapshot for sys.path."""
 
     def __init__(self) -> None:
-        self.__saved = list(sys.path), list(sys.meta_path)
+        self.__saved = sys.path.copy(), sys.meta_path.copy()
 
     def restore(self) -> None:
         sys.path[:], sys.meta_path[:] = self.__saved
@@ -65,7 +65,7 @@ class SysModulesSnapshot:
     """A snapshot for sys.modules."""
 
     def __init__(self) -> None:
-        self.__saved = dict(sys.modules)
+        self.__saved = sys.modules.copy()
 
     def restore(self) -> None:
         sys.modules.clear()