diff --git a/pyproject.toml b/pyproject.toml
index 84470a8a18b..8e97e3b4446 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,6 +5,7 @@ exclude = [
   "tools/gyp",
   "tools/inspector_protocol",
   "tools/eslint/node_modules",
+  "tools/github_reporter"
 ]
 line-length = 172
 target-version = "py38"
@@ -40,12 +41,6 @@ ignore = [
 [tool.ruff.lint.mccabe]
 max-complexity = 100
 
-[tool.ruff.lint.per-file-ignores]
-"tools/checkimports.py" = ["W605"]
-"tools/gyp/pylib/gyp/xcodeproj_file.py" = ["PLE0101"]
-"tools/icu/shrink-icu-src.py" = ["W605"]
-"tools/mkssldef.py" = ["W605"]
-
 [tool.ruff.lint.pylint]
 max-args = 12
 max-branches = 110
diff --git a/tools/icu/shrink-icu-src.py b/tools/icu/shrink-icu-src.py
index 3a9ba2fbfbf..b390778626b 100755
--- a/tools/icu/shrink-icu-src.py
+++ b/tools/icu/shrink-icu-src.py
@@ -48,7 +48,7 @@ def print_size(fn):
     size = (os.stat(fn).st_size) / 1024000
     print('%dM\t%s' % (size, fn))
 
-ignore_regex = re.compile('^.*\.(vcxproj|filters|nrm|icu|dat|xml|txt|ac|guess|m4|in|sub|py|mak)$')
+ignore_regex = re.compile(r'^.*\.(vcxproj|filters|nrm|icu|dat|xml|txt|ac|guess|m4|in|sub|py|mak)$')
 
 def icu_ignore(dir, files):
     subdir = dir[len(options.icusrc)+1::]