diff --git a/src/specify_cli/bundles/versioning.py b/src/specify_cli/bundles/versioning.py
index df73b5bab6..0837b38bee 100644
--- a/src/specify_cli/bundles/versioning.py
+++ b/src/specify_cli/bundles/versioning.py
@@ -95,7 +95,8 @@ def same_version(actual: str, pinned: str) -> bool:
     r"^(?:0|[1-9]\d*)\.(?:0|[1-9]\d*)\.(?:0|[1-9]\d*)"
     r"(?:-(?:(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*)"
     r"(?:\.(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?"
-    r"(?:\+(?:[0-9a-zA-Z-]+(?:\.[0-9a-zA-Z-]+)*))?$"
+    r"(?:\+(?:[0-9a-zA-Z-]+(?:\.[0-9a-zA-Z-]+)*))?$",
+    flags=re.ASCII,
 )
 
 
diff --git a/tests/specify_cli/bundles/test_command_validate.py b/tests/specify_cli/bundles/test_command_validate.py
index f0b22f7963..28da55bdd8 100644
--- a/tests/specify_cli/bundles/test_command_validate.py
+++ b/tests/specify_cli/bundles/test_command_validate.py
@@ -6,6 +6,7 @@
 from unittest.mock import patch  # noqa: F401
 
 import yaml  # noqa: F401
+import pytest
 from typer.testing import CliRunner
 
 from specify_cli import app
@@ -27,9 +28,12 @@ def test_validate_reports_invalid_manifest(project: Path):
     assert "license" in result.output
 
 
-def test_validate_accepts_valid_manifest(project: Path):
+@pytest.mark.parametrize("version", ["1.2.0", "1.20.30-12alpha.1+build.01", "V10.20.30"])
+def test_validate_accepts_valid_manifest(project: Path, version: str):
+    data = valid_manifest_dict()
+    data["bundle"]["version"] = version
     (project / "bundle.yml").write_text(
-        yaml.safe_dump(valid_manifest_dict()), encoding="utf-8"
+        yaml.safe_dump(data), encoding="utf-8"
     )
     # Offline mode does not fail on references it cannot verify (synthetic ids
     # here); they surface as warnings while structure is confirmed valid.
@@ -38,6 +42,23 @@ def test_validate_accepts_valid_manifest(project: Path):
     assert "valid" in result.output
 
 
+@pytest.mark.parametrize("version", ["1٢.2.3", "1.2.3-1٢", "1.2.3-٢alpha"])
+@pytest.mark.parametrize("field", ["bundle", "extension"])
+def test_validate_rejects_non_ascii_version(project: Path, version: str, field: str):
+    data = valid_manifest_dict()
+    if field == "bundle":
+        data["bundle"]["version"] = version
+    else:
+        data["provides"]["extensions"][0]["version"] = version
+    (project / "bundle.yml").write_text(yaml.safe_dump(data), encoding="utf-8")
+
+    result = runner.invoke(app, ["bundle", "validate", "--offline"])
+
+    assert result.exit_code == 1, result.output
+    assert "invalid" in result.output
+    assert version in result.output
+
+
 def test_validate_escapes_manifest_markup_in_errors(project: Path):
     data = valid_manifest_dict()
     # An invalid constraint is echoed back inside the validation error.
diff --git a/tests/specify_cli/bundles/test_versioning.py b/tests/specify_cli/bundles/test_versioning.py
index aa6dfc1494..36d1117b8e 100644
--- a/tests/specify_cli/bundles/test_versioning.py
+++ b/tests/specify_cli/bundles/test_versioning.py
@@ -14,6 +14,15 @@
     ("1.2.3-alpha1", True),
     ("1.2.3-beta2", True),
     ("v1.2.3", True),
+    ("1.20.30-12alpha.1+build.01", True),
+    ("V10.20.30", True),
+    # SemVer identifiers use ASCII digits, not Python's broader Unicode \d.
+    ("1٢.2.3", False),
+    ("1.2٣.3", False),
+    ("1.2.3٤", False),
+    ("1.2.3-1٢", False),
+    ("1.2.3-٢alpha", False),
+    ("1.2.3-１beta", False),
     ("not-a-version", False),
     ("", False),
     # packaging.version.Version accepts these partial versions; SemVer must not.