diff --git a/.circleci/config.yml b/.circleci/config.yml
deleted file mode 100644
index d3aee258..00000000
--- a/.circleci/config.yml
+++ /dev/null
@@ -1,66 +0,0 @@
-version: 2.1
-jobs:
-  test_filters:
-    description: Test all Lua filters
-    docker:
-      - image: pandoc/ubuntu:latest
-        entrypoint: /bin/bash
-    steps:
-      - checkout
-      - run: |
-          apt-get -q --no-allow-insecure-repositories update && \
-          DEBIAN_FRONTEND=noninteractive \
-          apt-get install --assume-yes --no-install-recommends \
-              aspell \
-              aspell-fr \
-              aspell-en \
-              default-jre \
-              graphviz \
-              imagemagick \
-              inkscape \
-              lilypond \
-              lmodern \
-              luarocks \
-              make \
-              python3 \
-              python3-pip \
-              python3-tk \
-              python3-numpy \
-              python3-matplotlib \
-              python-is-python3 \
-              texlive-bibtex-extra \
-              texlive-fonts-recommended \
-              texlive-latex-recommended \
-              texlive-latex-extra \
-              texlive-pictures \
-              texlive-plain-generic \
-              texlive-xetex \
-              wget
-      # Download plantuml.jar for plantuml filter
-      - run: |
-          cd $HOME && \
-          wget https://sourceforge.net/projects/plantuml/files/plantuml.1.2018.9.jar && \
-          cd -
-      - run: >-
-          LANG=C.UTF-8
-          PLANTUML=$HOME/plantuml.1.2018.9.jar
-          DIFF="diff -u"
-          make test
-
-# Setup builds for each commit, as well as weekly cron job.
-workflows:
-  version: 2.1
-  test:
-    jobs:
-      - test_filters
-  weekly:
-    jobs:
-      - test_filters
-    triggers:
-      - schedule:
-          # At 4:17am each Monday
-          cron: "17 4 * * 1"
-          filters:
-            branches:
-              only:
-                - master
diff --git a/.github/FUNDING.yml b/.github/FUNDING.yml
new file mode 100644
index 00000000..30ff774d
--- /dev/null
+++ b/.github/FUNDING.yml
@@ -0,0 +1 @@
+github: [tarleb, jgm]
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 00000000..0f3277fb
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,36 @@
+name: CI
+
+on:
+  pull_request:
+    branches:
+      - master
+    paths-ignore:
+      - '**/README.md'
+      - CONTRIBUTING.md
+      - LICENSE
+      - .editorconfig
+  push:
+    branches:
+      - master
+    paths-ignore:
+      - '**/README.md'
+      - CONTRIBUTING.md
+      - LICENSE
+      - .editorconfig
+  schedule:
+    # At 4:17am each Monday
+    - cron: '17 4 * * 1'
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Build Docker image
+        run: make docker-test-image
+
+      - name: Run tests in Docker image
+        run: make docker-test
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index b1f122b7..00000000
--- a/.travis.yml
+++ /dev/null
@@ -1,60 +0,0 @@
-# Use new container infrastructure to enable caching
-sudo: false
-
-# Older Ubuntu versions use Lua 5.1 for luarocks, while 20.04
-# (focal) uses Lua 5.3.
-dist: focal
-
-# Do not choose a language; we provide our own build tools.
-language: minimal
-
-addons:
-  apt:
-    packages:
-      - aspell
-      - aspell-fr
-      - aspell-en
-      - imagemagick
-      - default-jre
-      - graphviz
-      - inkscape
-      - python3
-      - python3-pip
-      - python3-tk
-      - python3-numpy
-      - python3-matplotlib
-      - python-is-python3
-      - lilypond
-      - lmodern
-      - texlive-bibtex-extra
-      - texlive-fonts-recommended
-      - texlive-latex-recommended
-      - texlive-latex-extra
-      - texlive-pictures
-      - texlive-plain-generic
-      - texlive-xetex
-
-before_install:
-- unset CC
-# Download and unpack the pandoc binary
-- |
-  pushd $HOME
-  RELEASES_URL='https://github.com/jgm/pandoc/releases'
-  export PANDOCVERSION=$(curl --silent -I "$RELEASES_URL/latest" | sed -ne 's#[Ll]ocation:.*tag/\(.*\)$#\1#p' | tr -d "\n\r")
-  echo $PANDOCVERSION
-  travis_retry wget $RELEASES_URL/download/$PANDOCVERSION/pandoc-$PANDOCVERSION-linux-amd64.tar.gz
-  tar xvzf pandoc-$PANDOCVERSION-linux-amd64.tar.gz
-  popd
-# Download plantuml.jar for plantuml filter
-- |
-  pushd $HOME
-  travis_retry wget http://sourceforge.net/projects/plantuml/files/plantuml.jar
-  popd
-- export PATH=$HOME/pandoc-$PANDOCVERSION/bin:$PATH
-- export PLANTUML=$HOME/plantuml.jar
-
-install: []
-
-script:
-- |
-  make test
diff --git a/Makefile b/Makefile
index 03b31aaa..24966a0b 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 FILTERS=$(wildcard $(shell find * -type d | grep -v '[/\\]'))
 FILTER_FILES=$(shell find * -name "*.lua" -type f)
-LUA_FILTERS_TEST_IMAGE = tarleb/lua-filters-test
+LUA_FILTERS_TEST_IMAGE = pandoc/lua-filters-test
 
 .PHONY: test show-args docker-test docker-test-image archive
 
diff --git a/README.md b/README.md
index 1f3acaf9..e695f3d2 100644
--- a/README.md
+++ b/README.md
@@ -25,8 +25,9 @@ Each filter goes in its own subdirectory.  Each subdirectory contains:
 Requirements
 ------------
 
-Filters are tested against the latest pandoc version.  There is
-no guarantee that filters will work with older versions, but
+Filters are tested against the pandoc version in the latest
+pandoc/ubuntu Docker image, i.e. usually the latest release. There
+is no guarantee that filters will work with older versions, but
 many do.
 
 Some filters depend on external programs, which must be installed