diff --git a/Dockerfile b/Dockerfile
index 4905122..2d8c15c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,12 +1,15 @@
 FROM alpine:latest
-# https://dist.torproject.org/torbrowser/8.0.5/tor-browser-linux64-8.0.5_en-US.tar.xz
-RUN wget -O tor.tar.xz https://files.nixaid.com/tor-browser-linux64-8.0.5_en-US.tar.xz && \
-    wget -O tor.tar.xz.asc https://www.torproject.org/dist/torbrowser/8.0.5/tor-browser-linux64-8.0.5_en-US.tar.xz.asc
+# gpg --auto-key-locate nodefault,wkd --locate-keys torbrowser@torproject.org
+# gpg --output tor.keyring --export 0xEF6E286DDA85EA2A4BA7DE684E2C6E8793298290
+# https://dist.torproject.org/torbrowser/8.5.5/tor-browser-linux64-8.5.5_en-US.tar.xz
+RUN wget -O tor.tar.xz https://files.nixaid.com/tor-browser-linux64-8.5.5_en-US.tar.xz && \
+    wget -O tor.tar.xz.asc https://www.torproject.org/dist/torbrowser/8.5.5/tor-browser-linux64-8.5.5_en-US.tar.xz.asc
 COPY sha512sum.txt .
+COPY tor.keyring .
 RUN apk add --update gnupg && \
     sha512sum -c sha512sum.txt && \
-    gpg --keyserver keyserver.ubuntu.com --recv-keys "EF6E286DDA85EA2A4BA7DE684E2C6E8793298290" && \
-    gpg --verify tor.tar.xz.asc && \
+    gpg --keyring ./tor.keyring -k "EF6E286DDA85EA2A4BA7DE684E2C6E8793298290" && \
+    gpg --keyring ./tor.keyring --verify tor.tar.xz.asc && \
     unxz tor.tar.xz
 
 FROM ubuntu:bionic
diff --git a/sha512sum.txt b/sha512sum.txt
index bdef342..e27cb06 100644
--- a/sha512sum.txt
+++ b/sha512sum.txt
@@ -1 +1 @@
-97fc61465039ed58d5667d3a275af3c5a3e579f5bc65356e3bb6f03a29b3ad7e16f4ad959a8829a0750690417221025e93992ef7f2de0d4dac91ab5d514d970b  tor.tar.xz
+d8206303ff0bc82849640020435ad713070d24fc6256c08dd230c2af8ac25f4a5dfea6308eb80c1bf4f93027aa79e7965ceec27d0a54e8a99768119e1745a2cf  tor.tar.xz
diff --git a/tor.keyring b/tor.keyring
new file mode 100644
index 0000000..8d60f94
Binary files /dev/null and b/tor.keyring differ