diff --git a/Dockerfile.compute-node b/Dockerfile.compute-node
index 2f60fd59f8..d7e6dea961 100644
--- a/Dockerfile.compute-node
+++ b/Dockerfile.compute-node
@@ -7,9 +7,8 @@ RUN apt update &&  \
 
 # Build Postgres from the neon postgres repository.
 FROM build-deps AS pg-build
-RUN git clone -b main https://github.com/neondatabase/postgres.git postgres && \
-    cd postgres &&  \
-    ./configure CFLAGS='-O2 -g3' --enable-debug --with-uuid=ossp && \
+COPY vendor/postgres postgres
+RUN cd postgres &&  \
     make MAKELEVEL=0 -j $(getconf _NPROCESSORS_ONLN) -s install && \
     make MAKELEVEL=0 -j $(getconf _NPROCESSORS_ONLN) -s -C contrib/ install && \
     # Install headers
diff --git a/vendor/postgres b/vendor/postgres
index a479855158..3f315a1ec3 160000
--- a/vendor/postgres
+++ b/vendor/postgres
@@ -1 +1 @@
-Subproject commit a4798551587fb5a52740687a341af83b28733dc6
+Subproject commit 3f315a1ec336b3a22a09d2015ce91697def4904e