diff --git a/pyproject.toml b/pyproject.toml
index 9b00bd28..e7288dc2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -36,6 +36,7 @@ dependencies = [
     "PyYAML>=6.0",
     "nltk>=3.9.1",
     "rich>=13.9.4",
+    "cssselect>=1.2.0",
     "httpx>=0.27.2",
     "httpx[http2]>=0.27.2",
     "fake-useragent>=2.0.3",
diff --git a/requirements.txt b/requirements.txt
index 20f4df4f..0e66b3f0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -24,6 +24,7 @@ psutil>=6.1.1
 PyYAML>=6.0
 nltk>=3.9.1
 rich>=13.9.4
+cssselect>=1.2.0
 chardet>=5.2.0
 brotli>=1.1.0
 httpx[http2]>=0.27.2