diff --git a/.github/workflows/python-package.yml b/.github/workflows/python-package.yml
index cae1d39..3b9d27d 100644
--- a/.github/workflows/python-package.yml
+++ b/.github/workflows/python-package.yml
@@ -17,7 +17,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        python-version: [3.8, 3.9, "3.10", "3.11"]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
         include:
             - os: macos-latest
               python-version: "3.11"
diff --git a/pyproject.toml b/pyproject.toml
index b68f855..e90df06 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -18,6 +18,7 @@ classifiers = [
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
     "Development Status :: 3 - Alpha",
     "License :: OSI Approved :: MIT License",
 ]
diff --git a/regexmodel/regexclass.py b/regexmodel/regexclass.py
index 62134f0..e9f3cc4 100644
--- a/regexmodel/regexclass.py
+++ b/regexmodel/regexclass.py
@@ -418,8 +418,8 @@ def draw_once(self):
 
     @classmethod
     def from_string(cls, regex_str) -> Optional[tuple[BaseRegex, str]]:
-        _special_chars = [".", "+", "*", "?", "^", "$", "(", ")", "[", "]",
-                          "{", "}", "|", "\\", "-", "~", "\r"]
+        _special_chars = [".", "+", "*", "?", "^", "$", "(", ")", "[", "]", "#", "&",
+                          "{", "}", "|", "\\", "-", "~", "\r", "\t", "\x0b", "\x0c", "\n"]
         if len(regex_str) > 1 and regex_str[0] == "\\" and regex_str[1] in _special_chars:
             return cls([_unescape(regex_str[1])]), regex_str[2:]
         if len(regex_str) >= 1 and regex_str[0] != "\\" and regex_str[0] not in _special_chars:
diff --git a/tests/test_regex.py b/tests/test_regex.py
index 42541de..32f6af1 100644
--- a/tests/test_regex.py
+++ b/tests/test_regex.py
@@ -1,4 +1,5 @@
 from pytest import mark
+import string
 
 from regexmodel import RegexModel
 
@@ -33,6 +34,10 @@ def test_full_pipeline(series, regex, counts):
     assert model.regex == new_model.regex
     assert new_model.serialize()["counts"] == model.serialize()["counts"]
 
+def test_all_chars():
+    model = RegexModel.fit(list(string.printable), count_thres=1)
+    new_model = RegexModel(model.serialize())
+    assert isinstance(new_model, RegexModel)
 
 
 # @mark.parametrize(