diff --git a/Dockerfile b/Dockerfile
index e4cf7261..02f3861e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -7,7 +7,7 @@ FROM base AS builder
 ARG POSTGRES_VERSION
 
 RUN apt-get update -qq && apt-get upgrade && \
-    apt-get install -y python3-yaml \
+    apt-get install -y python3-yaml && \
     apt-get install -y \
     postgresql-server-dev-${POSTGRES_VERSION} \
     build-essential libreadline-dev zlib1g-dev flex bison libxml2-dev libxslt-dev \