diff --git a/misc/docker/Dockerfile b/misc/docker/Dockerfile
index 2f8e3dd7a..0f69d02df 100644
--- a/misc/docker/Dockerfile
+++ b/misc/docker/Dockerfile
@@ -4,8 +4,8 @@ FROM alpine
 RUN apk add --update openssl
 
 # Download Nix and install it into the system.
-RUN wget https://nixos.org/releases/nix/nix-2.0/nix-2.0-x86_64-linux.tar.bz2 \
-  && echo "6312837aee33306cdbb351b75ba1638b89d21b30f0caf0346f9a742425f197ee  nix-2.0-x86_64-linux.tar.bz2" | sha256sum -c \
+RUN wget https://nixos.org/releases/nix/nix-2.0.2/nix-2.0.2-x86_64-linux.tar.bz2 \
+  && echo "d0c2492d7d8f824e3b1ace15a1a58f64a0a8faacc59936ebedfe18905d982d7c  nix-2.0.2-x86_64-linux.tar.bz2" | sha256sum -c \
   && tar xjf nix-*-x86_64-linux.tar.bz2 \
   && addgroup -g 30000 -S nixbld \
   && for i in $(seq 1 30); do adduser -S -D -h /var/empty -g "Nix build user $i" -u $((30000 + i)) -G nixbld nixbld$i ; done \
diff --git a/misc/docker/README.md b/misc/docker/README.md
new file mode 100644
index 000000000..491be7408
--- /dev/null
+++ b/misc/docker/README.md
@@ -0,0 +1,8 @@
+To update https://hub.docker.com/r/nixos/nix/
+
+    $ docker build . -t nixos/nix:2.0
+    $ docker tag nixos/nix:2.0 nixos/nix:latest
+    $ docker push nixos/nix:latest
+    $ docker push nixos/nix:2.0
+
+Write access: @domenkozar