diff --git a/Dockerfile b/Dockerfile
index 2460dd2..1a34e2a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,13 +1,13 @@
-FROM golang:1.16
+FROM golang:1.17-buster
 
-# upgrade git to v2.30.2
-RUN curl -SL https://github.com/git/git/archive/v2.30.2.tar.gz \
+# upgrade git to v2.33.0
+RUN curl -SL https://github.com/git/git/archive/v2.33.0.tar.gz \
     | tar -xzv -C /go \
     && apt-get update \
     && apt-get install -y libcurl4-gnutls-dev libexpat1-dev gettext libz-dev libssl-dev \
-    && make -C /go/git-2.30.2 prefix=/usr all \
-    && make -C /go/git-2.30.2 prefix=/usr install \
-    && rm -rf /go/git-2.30.2 \
+    && make -C /go/git-2.33.0 prefix=/usr all \
+    && make -C /go/git-2.33.0 prefix=/usr install \
+    && rm -rf /go/git-2.33.0 \
 # install git-lfs
     && curl -s https://packagecloud.io/install/repositories/github/git-lfs/script.deb.sh | bash \
     && apt-get install -y git-lfs \