diff --git a/pyproject.toml b/pyproject.toml
index 3e9bd78..a9fb2cc 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,6 +20,7 @@ dependencies = [
     "httpx>=0.28.1",
     "python-pptx>=1.0.2",
     "pypdf>=6.4.2",
+    "regex>=2025.11.3",
 ]
 dynamic = ["version"]
 
diff --git a/uv.lock b/uv.lock
index c9f4847..5701b8e 100644
--- a/uv.lock
+++ b/uv.lock
@@ -383,6 +383,7 @@ dependencies = [
     { name = "pysubs2" },
     { name = "python-docx" },
     { name = "python-pptx" },
+    { name = "regex" },
     { name = "srt" },
     { name = "xlsx2html" },
 ]
@@ -420,6 +421,7 @@ requires-dist = [
     { name = "pysubs2", specifier = ">=1.8.0" },
     { name = "python-docx", specifier = ">=1.2.0" },
     { name = "python-pptx", specifier = ">=1.0.2" },
+    { name = "regex", specifier = ">=2025.11.3" },
     { name = "srt", specifier = ">=3.5.3" },
     { name = "xlsx2html", specifier = ">=0.6.2" },
 ]