diff --git a/.github/workflows/python-code-quality.yml b/.github/workflows/python-code-quality.yml
index 385ad6b9dd..9febdd990e 100644
--- a/.github/workflows/python-code-quality.yml
+++ b/.github/workflows/python-code-quality.yml
@@ -36,7 +36,7 @@ jobs:
       # renovate: datasource=pypi depName=bandit
       BANDIT_VERSION: "1.7.10"
       # renovate: datasource=pypi depName=ruff
-      RUFF_VERSION: "0.6.7"
+      RUFF_VERSION: "0.6.8"
 
     runs-on: ${{ matrix.os }}
     permissions:
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 74423979b2..b7a517fba3 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -37,7 +37,7 @@ repos:
           )
   - repo: https://github.com/astral-sh/ruff-pre-commit
     # Ruff version.
-    rev: v0.6.7
+    rev: v0.6.8
     hooks:
       # Run the linter.
       - id: ruff
diff --git a/gui/wxpython/gui_core/gselect.py b/gui/wxpython/gui_core/gselect.py
index cec6963a52..04c3a5f136 100644
--- a/gui/wxpython/gui_core/gselect.py
+++ b/gui/wxpython/gui_core/gselect.py
@@ -414,7 +414,7 @@ def SetData(self, **kargs):
             self.multiple = kargs["multiple"]
         if "onPopup" in kargs:
             self.onPopup = kargs["onPopup"]
-        if kargs.get("layerTree", None):
+        if kargs.get("layerTree"):
             self.filterItems = []  # reset
             ltype = kargs["type"]
             for layer in kargs["layerTree"].GetVisibleLayers(skipDigitized=True):
diff --git a/scripts/r.in.wms/wms_drv.py b/scripts/r.in.wms/wms_drv.py
index 186157ad6d..dd666573cf 100644
--- a/scripts/r.in.wms/wms_drv.py
+++ b/scripts/r.in.wms/wms_drv.py
@@ -736,9 +736,7 @@ def _findTileMats(self, tile_mats, region, bbox):
 
             best_diff = best_scale_den - scale_den
             mat_diff = mat_scale_den - scale_den
-            if (best_diff < mat_diff and mat_diff < 0) or (
-                best_diff > mat_diff and best_diff > 0
-            ):
+            if (best_diff < mat_diff < 0) or (best_diff > mat_diff and best_diff > 0):
                 best_t_mat = t_mat
                 best_scale_den = mat_scale_den
 
@@ -1020,9 +1018,7 @@ def _parseTilePattern(self, group_t_patts, bbox, region):
             best_diff = best_res - res[comp_res]
             tile_diff = t_res[comp_res] - res[comp_res]
 
-            if (best_diff < tile_diff and tile_diff < 0) or (
-                best_diff > tile_diff and best_diff > 0
-            ):
+            if (best_diff < tile_diff < 0) or (best_diff > tile_diff and best_diff > 0):
                 best_res = t_res[comp_res]
                 best_patt = pattern