diff --git a/pupy/conf/Dockerfile.env b/pupy/conf/Dockerfile.env
index 137afd1dc..fa423e919 100644
--- a/pupy/conf/Dockerfile.env
+++ b/pupy/conf/Dockerfile.env
@@ -25,7 +25,7 @@ RUN \
 COPY requirements.txt /build/
 
 RUN \
-	python -m pip install --no-cache-dir --upgrade pip six setuptools wheel && \
+	python -m pip install --no-cache-dir --upgrade pip six setuptools wheel && python -m pip install "regex<2022.1.18" && \
 		cd /build && \
 			python -m pip install --no-cache-dir --upgrade -r requirements.txt