diff --git a/requirements.txt b/requirements.txt
index f47cd19..1c7cae5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,10 +5,11 @@ dlib==19.4.0
 flask==1.0
 Flask-Cors==3.0.9
 imutils==0.4.3
-pillow==8.1.1
+pillow==8.3.2
 pytesseract==0.1.7
 fuzzywuzzy==0.15.1
 python-levenshtein==0.12.1
 colorlog==3.0.1
-Sphinx==3.0.4
+Sphinx==3.3.0
 sphinx-rtd-theme==0.2.4
+setuptools>=65.5.1 # not directly required, pinned by Snyk to avoid a vulnerability