diff --git a/dockerfile b/dockerfile
index 0a72e52..68bd93c 100644
--- a/dockerfile
+++ b/dockerfile
@@ -6,7 +6,7 @@ RUN apk update
 
 RUN apk add \
 	python3 \ 
-	python-dev \
+	python3-dev \
 	py-cryptography \
 	py3-openssl