diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1cad01e..486b17b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,18 @@ All user visible changes to this project will be documented in this file. This p
 
 
 
+## [85.0-driver0.29.0-r0] · 2021-01-28
+[85.0-driver0.29.0-r0]: /../../tree/85.0-driver0.29.0-r0
+
+[Diff](/../../compare/84.0.2-driver0.29.0-r0...85.0-driver0.29.0-r0)
+
+### Upgraded
+
+- Firefox 85.0: <https://www.mozilla.org/firefox/85.0/releasenotes>
+
+
+
+
 ## [84.0.2-driver0.29.0-r0] · 2021-01-20
 [84.0.2-driver0.29.0-r0]: /../../tree/84.0.2-driver0.29.0-r0
 
diff --git a/Dockerfile b/Dockerfile
index 07effcc..afcb267 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 # https://hub.docker.com/_/debian
 FROM debian:buster-slim
 
-ARG firefox_ver=84.0.2
+ARG firefox_ver=85.0
 ARG geckodriver_ver=0.29.0
 ARG build_rev=0
 
diff --git a/Makefile b/Makefile
index 3efde57..ab010b5 100644
--- a/Makefile
+++ b/Makefile
@@ -146,7 +146,7 @@ test.docker:
 ifeq ($(wildcard node_modules/.bin/bats),)
 	@make npm.install
 endif
-	IMAGE=instrumentisto/$(NAME):$(tag) \
+	IMAGE=instrumentisto/$(NAME):$(if $(call eq,$(tag),),$(VERSION),$(tag)) \
 	node_modules/.bin/bats \
 		--timing $(if $(call eq,$(CI),),--pretty,--formatter tap) \
 		tests/main.bats
@@ -166,7 +166,7 @@ endif
 npm.install:
 ifeq ($(dockerized),yes)
 	docker run --rm --network=host -v "$(PWD)":/app/ -w /app/ \
-		node:$(NODE_VER) \
+		node \
 			make npm.install dockerized=no
 else
 	npm install
diff --git a/README.md b/README.md
index fd38104..f4f9e76 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ geckodriver Docker image
 
 ## Supported tags and respective `Dockerfile` links
 
-- [`84.0.2-driver0.29.0-r0-debian-buster`, `84.0.2-driver0.29.0-r0-debian`, `84.0.2-driver0.29.0-r0`, `84.0.2-driver0.29.0-debian-buster`, `84.0.2-driver0.29.0-debian`, `84.0.2-driver0.29.0`, `84.0.2-debian-buster`, `84.0.2-debian`, `84.0.2`, `debian-buster`, `debian`, `latest`][101]
+- [`85.0-driver0.29.0-r0-debian-buster`, `85.0-driver0.29.0-r0-debian`, `85.0-driver0.29.0-r0`, `85.0-driver0.29.0-debian-buster`, `85.0-driver0.29.0-debian`, `85.0-driver0.29.0`, `85.0-debian-buster`, `85.0-debian`, `85.0`, `debian-buster`, `debian`, `latest`][101]