diff --git a/jwtproxy/requirements.txt b/jwtproxy/requirements.txt
index 76d718d6..00e22d1d 100644
--- a/jwtproxy/requirements.txt
+++ b/jwtproxy/requirements.txt
@@ -10,7 +10,7 @@ frozenlist==1.8.0
 idna==3.11
 jwcrypto==1.5.6
 multidict==6.7.1
-pycparser==2.21
+pycparser==3.0
 wrapt==1.14.1
 yarl===1.23.0
 opencensus-ext-azure==1.1.15