diff --git a/Makefile b/Makefile
index 964d2bc6..828ac40d 100644
--- a/Makefile
+++ b/Makefile
@@ -53,12 +53,6 @@ format: install $(BIN)/buf $(BIN)/license-header ## Format code
 .PHONY: test
 test: generate install gettestdata ## Run unit tests
 	uv run -- python -m unittest
-	$(MAKE) testextra
-
-.PHONY: testextra
-testextra:
-	uv sync --extra re2
-	uv run -- python -m unittest
 
 .PHONY: conformance
 conformance: $(BIN)/protovalidate-conformance generate install ## Run conformance tests
diff --git a/README.md b/README.md
index 85f8b908..e68f365b 100644
--- a/README.md
+++ b/README.md
@@ -52,12 +52,6 @@ To install the package, use `pip`:
 pip install protovalidate
 ```
 
-Protovalidate also has an optional dependency on [google-re2](https://pypi.org/project/google-re2/). If you require re2 syntax for your regular expressions, install the extra dep as follows:
-
-```shell
-pip install protovalidate[re2]
-```
-
 ## Documentation
 
 Comprehensive documentation for Protovalidate is available at [protovalidate.com][protovalidate].
diff --git a/protovalidate/internal/extra_func.py b/protovalidate/internal/extra_func.py
index 386020ee..40bb677e 100644
--- a/protovalidate/internal/extra_func.py
+++ b/protovalidate/internal/extra_func.py
@@ -18,17 +18,12 @@
 from urllib import parse as urlparse
 
 import celpy
+import re2
 from celpy import celtypes
 
 from protovalidate.internal import string_format
 from protovalidate.internal.rules import MessageType, field_to_cel
 
-_USE_RE2 = True
-try:
-    import re2
-except ImportError:
-    _USE_RE2 = False
-
 # See https://html.spec.whatwg.org/multipage/input.html#valid-e-mail-address
 _email_regex = re.compile(
     r"^[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$"
@@ -1559,16 +1554,7 @@ def __peek(self, char: str) -> bool:
         return self._index < len(self._string) and self._string[self._index] == char
 
 
-def cel_matches_re(text: str, pattern: str) -> celpy.Result:
-    try:
-        m = re.search(pattern, text)
-    except re.error as ex:
-        return celpy.CELEvalError("match error", ex.__class__, ex.args)
-
-    return celtypes.BoolType(m is not None)
-
-
-def cel_matches_re2(text: str, pattern: str) -> celpy.Result:
+def cel_matches(text: str, pattern: str) -> celpy.Result:
     try:
         m = re2.search(pattern, text)
     except re2.error as ex:
@@ -1577,9 +1563,6 @@ def cel_matches_re2(text: str, pattern: str) -> celpy.Result:
     return celtypes.BoolType(m is not None)
 
 
-cel_matches = cel_matches_re2 if _USE_RE2 else cel_matches_re
-
-
 def make_extra_funcs() -> dict[str, celpy.CELFunction]:
     string_fmt = string_format.StringFormat()
     return {
diff --git a/pyproject.toml b/pyproject.toml
index e7dd82c8..a7b7f9a3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -24,9 +24,6 @@ dynamic = ["version"]
 dependencies = [
     "protobuf>=5",
     "cel-python==0.2.*",
-]
-[project.optional-dependencies]
-re2 = [
     # We need at least this version, which started publishing wheels for Python 3.13.
     # Ref: https://github.com/google/re2/issues/516
     "google-re2>=1.1.20250722; python_version == '3.13'",
diff --git a/test/test_matches.py b/test/test_matches.py
index 3accacdf..6c0b3641 100644
--- a/test/test_matches.py
+++ b/test/test_matches.py
@@ -12,33 +12,18 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import importlib.util
 import unittest
 
 import celpy
 from celpy import celtypes
 
-from protovalidate.internal.extra_func import cel_matches_re, cel_matches_re2
-
-_USE_RE2 = True
-spec = importlib.util.find_spec("re2")
-if spec is None:
-    _USE_RE2 = False
+from protovalidate.internal.extra_func import cel_matches
 
 
 class TestCollectViolations(unittest.TestCase):
-    @unittest.skipUnless(_USE_RE2, "Requires 're2'")
     def test_function_matches_re2(self):
         empty_string = celtypes.StringType("")
         # \z is valid re2 syntax for end of text
-        self.assertTrue(cel_matches_re2(empty_string, "^\\z"))
+        self.assertTrue(cel_matches(empty_string, "^\\z"))
         # \Z is invalid re2 syntax
-        self.assertIsInstance(cel_matches_re2(empty_string, "^\\Z"), celpy.CELEvalError)
-
-    @unittest.skipUnless(_USE_RE2 is False, "Requires 're'")
-    def test_function_matches_re(self):
-        empty_string = celtypes.StringType("")
-        # \z is invalid re syntax
-        self.assertIsInstance(cel_matches_re(empty_string, "^\\z"), celpy.CELEvalError)
-        # \Z is valid re syntax for end of text
-        self.assertTrue(cel_matches_re(empty_string, "^\\Z"))
+        self.assertIsInstance(cel_matches(empty_string, "^\\Z"), celpy.CELEvalError)
diff --git a/uv.lock b/uv.lock
index a5020b96..70816d10 100644
--- a/uv.lock
+++ b/uv.lock
@@ -205,12 +205,8 @@ name = "protovalidate"
 source = { editable = "." }
 dependencies = [
     { name = "cel-python" },
-    { name = "protobuf" },
-]
-
-[package.optional-dependencies]
-re2 = [
     { name = "google-re2" },
+    { name = "protobuf" },
 ]
 
 [package.dev-dependencies]
@@ -224,12 +220,11 @@ dev = [
 [package.metadata]
 requires-dist = [
     { name = "cel-python", specifier = "==0.2.*" },
-    { name = "google-re2", marker = "python_full_version == '3.12.*' and extra == 're2'", specifier = ">=1.1" },
-    { name = "google-re2", marker = "python_full_version == '3.13.*' and extra == 're2'", specifier = ">=1.1.20250722" },
-    { name = "google-re2", marker = "extra == 're2'", specifier = ">=1" },
+    { name = "google-re2", specifier = ">=1" },
+    { name = "google-re2", marker = "python_full_version == '3.12.*'", specifier = ">=1.1" },
+    { name = "google-re2", marker = "python_full_version == '3.13.*'", specifier = ">=1.1.20250722" },
     { name = "protobuf", specifier = ">=5" },
 ]
-provides-extras = ["re2"]
 
 [package.metadata.requires-dev]
 dev = [