diff --git a/.circleci/config.yml b/.circleci/config.yml
deleted file mode 100644
index cff8b98a..00000000
--- a/.circleci/config.yml
+++ /dev/null
@@ -1,79 +0,0 @@
-###############################################################################
-# Anchors for common settings
-###############################################################################
-defaults: &defaults
-  steps:
-    - checkout
-    - restore_cache:
-        keys:
-          - v2-gradle-caches-{{ checksum "reckon-core/gradle/dependency-locks/runtimeClasspath.lockfile" }}-{{ checksum "reckon-gradle/gradle/dependency-locks/runtimeClasspath.lockfile" }}
-    - attach_workspace:
-        at: "."
-    - run:
-        name: Compile and test
-        command: ./gradlew clean check --continue
-    - save_cache:
-        paths:
-          - "~/.gradle/caches"
-        key: v2-gradle-caches-{{ checksum "reckon-core/gradle/dependency-locks/runtimeClasspath.lockfile" }}-{{ checksum "reckon-gradle/gradle/dependency-locks/runtimeClasspath.lockfile" }}
-    - store_test_results:
-        path: "~/gradle-test-results"
-        when: always
-branches-and-tags: &branches-and-tags
-  filters:
-    branches:
-      ignore:
-        - gh-pages
-    tags:
-      only: /^\d+\.\d+\.\d+(?:-.+)?$/
-tags-only: &tags-only
-  filters:
-    branches:
-      ignore: /.*/
-    tags:
-      only: /^\d+\.\d+\.\d+(?:-.+)?$/
-
-###############################################################################
-# Jobs
-###############################################################################
-version: 2
-jobs:
-  build-java-8:
-    <<: *defaults
-    docker:
-      - image: ajoberstar/circleci-openjdk-gradle:8-jdk
-  build-java-11:
-    <<: *defaults
-    docker:
-      - image: ajoberstar/circleci-openjdk-gradle:11-jdk
-  publish:
-    docker:
-      - image: ajoberstar/circleci-openjdk-gradle:8-jdk
-    steps:
-      - checkout
-      - restore_cache:
-          keys:
-            - v2-gradle-caches-{{ checksum "reckon-core/gradle/dependency-locks/runtimeClasspath.lockfile" }}-{{ checksum "reckon-gradle/gradle/dependency-locks/runtimeClasspath.lockfile" }}
-      - run:
-          name: Decrypt Gradle properties
-          command: openssl enc -d -aes256 -base64 -in gradle.properties.enc -out gradle.properties -pass 'pass:$GRADLE_PROPS_KEY'
-      - run:
-          name: Publish Artifacts
-          command: ./gradlew publish publishPlugins
-###############################################################################
-# Workflows
-###############################################################################
-workflows:
-  version: 2
-  main:
-    jobs:
-      - build-java-8:
-          <<: *branches-and-tags
-      - build-java-11:
-          <<: *branches-and-tags
-      - publish:
-          <<: *tags-only
-          requires:
-            - build-java-8
-            - build-java-11
-          context: ajoberstar
diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
new file mode 100644
index 00000000..e7958355
--- /dev/null
+++ b/.github/workflows/build.yaml
@@ -0,0 +1,19 @@
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+jobs:
+  check:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        java: [8, 11]
+      fail-fast: false
+    steps:
+      - uses: "actions/checkout@master"
+      - uses: "actions/setup-java@master"
+        with:
+          java-version: ${{ matrix.java }}
+      - name: "Gradle check"
+        run: "./gradlew check"
diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
new file mode 100644
index 00000000..3990973c
--- /dev/null
+++ b/.github/workflows/release.yaml
@@ -0,0 +1,31 @@
+on:
+  push:
+    tags:
+      - "*"
+jobs:
+  check:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        java: [8, 11]
+      fail-fast: false
+    steps:
+      - uses: "actions/checkout@master"
+      - uses: "actions/setup-java@master"
+        with:
+          java-version: ${{ matrix.java }}
+      - run: "./gradlew check --continue"
+  publish:
+    runs-on: ubuntu-latest
+    needs: check
+    steps:
+      - uses: "actions/checkout@master"
+      - uses: "actions/setup-java@master"
+        with:
+          java-version: 11
+      - name: "Gradle publish"
+        env:
+          BINTRAY_USER: ${{ secrets.BINTRAY_USER }}
+          BINTRAY_KEY: ${{ secrets.BINTRAY_KEY }}
+          GRADLE_OPTS: "-Dorg.gradle.project.gradle.publish.key=${{ secrets.GRADLE_PLUGIN_KEY }} -Dorg.gradle.project.gradle.publish.secret=${{ secrets.GRADLE_PLUGIN_SECRET }}"
+        run: "./gradlew publish publishPlugins"
diff --git a/README.md b/README.md
index 049827d0..9034544f 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 # reckon
 
 [![Download](https://api.bintray.com/packages/ajoberstar/maven/reckon/images/download.svg)](https://bintray.com/ajoberstar/maven/reckon/_latestVersion)
-[![CircleCI](https://circleci.com/gh/ajoberstar/reckon.svg?style=svg)](https://circleci.com/gh/ajoberstar/reckon)
+![](https://github.com/ajoberstar/reckon/workflows/.github/workflows/build.yaml/badge.svg)
 
 ## Why do you care?
 
diff --git a/build.gradle b/build.gradle
index 4035ffa6..a2246d83 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,5 +1,6 @@
 plugins {
   id 'org.ajoberstar.defaults' version '0.15.1-rc.1'
+  id 'org.ajoberstar.stutter' version '0.5.1'
 }
 
 apply from: 'gradle/locking.gradle'
@@ -9,5 +10,5 @@ allprojects {
   group = 'org.ajoberstar.reckon'
 }
 
-ext.grgitVersion = '[3.0.0,4.0.0)'
+ext.grgitVersion = '[4.0.0,5.0.0)'
 ext.jgitVersion = '[5.0,6.0)'
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index 8c8ba28d..5c2d1cf0 100644
Binary files a/gradle/wrapper/gradle-wrapper.jar and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index f4d7b2bf..5028f28f 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.4.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.4-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
diff --git a/gradlew b/gradlew
index af6708ff..b0d6d0ab 100755
--- a/gradlew
+++ b/gradlew
@@ -1,5 +1,21 @@
 #!/usr/bin/env sh
 
+#
+# Copyright 2015 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
 ##############################################################################
 ##
 ##  Gradle start up script for UN*X
@@ -28,7 +44,7 @@ APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
 # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS='"-Xmx64m"'
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
 
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
diff --git a/gradlew.bat b/gradlew.bat
index 0f8d5937..15e1ee37 100644
--- a/gradlew.bat
+++ b/gradlew.bat
@@ -1,3 +1,19 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      http://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
 @if "%DEBUG%" == "" @echo off
 @rem ##########################################################################
 @rem
@@ -14,7 +30,7 @@ set APP_BASE_NAME=%~n0
 set APP_HOME=%DIRNAME%
 
 @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-set DEFAULT_JVM_OPTS="-Xmx64m"
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
 
 @rem Find java.exe
 if defined JAVA_HOME goto findJavaFromJavaHome
diff --git a/reckon-core/gradle/dependency-locks/compileClasspath.lockfile b/reckon-core/gradle/dependency-locks/compileClasspath.lockfile
index 51a1cf09..7630ed27 100644
--- a/reckon-core/gradle/dependency-locks/compileClasspath.lockfile
+++ b/reckon-core/gradle/dependency-locks/compileClasspath.lockfile
@@ -3,11 +3,11 @@
 # This file is expected to be part of source control.
 com.github.zafarkhaja:java-semver:0.9.0
 com.googlecode.javaewah:JavaEWAH:1.1.6
-com.jcraft:jsch:0.1.54
+com.jcraft:jsch:0.1.55
 com.jcraft:jzlib:1.1.1
 org.apache.commons:commons-lang3:3.9
-org.bouncycastle:bcpg-jdk15on:1.60
-org.bouncycastle:bcpkix-jdk15on:1.60
-org.bouncycastle:bcprov-jdk15on:1.60
-org.eclipse.jgit:org.eclipse.jgit:5.3.1.201904271842-r
-org.slf4j:slf4j-api:1.7.26
+org.bouncycastle:bcpg-jdk15on:1.61
+org.bouncycastle:bcpkix-jdk15on:1.61
+org.bouncycastle:bcprov-jdk15on:1.61
+org.eclipse.jgit:org.eclipse.jgit:5.5.1.201910021850-r
+org.slf4j:slf4j-api:1.7.29
diff --git a/reckon-core/gradle/dependency-locks/runtimeClasspath.lockfile b/reckon-core/gradle/dependency-locks/runtimeClasspath.lockfile
index 51a1cf09..7630ed27 100644
--- a/reckon-core/gradle/dependency-locks/runtimeClasspath.lockfile
+++ b/reckon-core/gradle/dependency-locks/runtimeClasspath.lockfile
@@ -3,11 +3,11 @@
 # This file is expected to be part of source control.
 com.github.zafarkhaja:java-semver:0.9.0
 com.googlecode.javaewah:JavaEWAH:1.1.6
-com.jcraft:jsch:0.1.54
+com.jcraft:jsch:0.1.55
 com.jcraft:jzlib:1.1.1
 org.apache.commons:commons-lang3:3.9
-org.bouncycastle:bcpg-jdk15on:1.60
-org.bouncycastle:bcpkix-jdk15on:1.60
-org.bouncycastle:bcprov-jdk15on:1.60
-org.eclipse.jgit:org.eclipse.jgit:5.3.1.201904271842-r
-org.slf4j:slf4j-api:1.7.26
+org.bouncycastle:bcpg-jdk15on:1.61
+org.bouncycastle:bcpkix-jdk15on:1.61
+org.bouncycastle:bcprov-jdk15on:1.61
+org.eclipse.jgit:org.eclipse.jgit:5.5.1.201910021850-r
+org.slf4j:slf4j-api:1.7.29
diff --git a/reckon-core/gradle/dependency-locks/testCompileClasspath.lockfile b/reckon-core/gradle/dependency-locks/testCompileClasspath.lockfile
index 62c05c3f..dde7c7c1 100644
--- a/reckon-core/gradle/dependency-locks/testCompileClasspath.lockfile
+++ b/reckon-core/gradle/dependency-locks/testCompileClasspath.lockfile
@@ -3,49 +3,49 @@
 # This file is expected to be part of source control.
 com.github.zafarkhaja:java-semver:0.9.0
 com.googlecode.javaewah:JavaEWAH:1.1.6
-com.jcraft:jsch:0.1.54
+com.jcraft:jsch:0.1.55
 com.jcraft:jzlib:1.1.1
 com.thoughtworks.qdox:qdox:1.12.1
 commons-cli:commons-cli:1.4
-info.picocli:picocli:3.9.5
+info.picocli:picocli:4.0.1
 jline:jline:2.14.6
 junit:junit:4.12
-org.ajoberstar.grgit:grgit-core:3.1.1
+org.ajoberstar.grgit:grgit-core:4.0.0
 org.apache.ant:ant-launcher:1.9.13
 org.apache.ant:ant:1.9.13
 org.apache.commons:commons-lang3:3.9
 org.apiguardian:apiguardian-api:1.0.0
-org.bouncycastle:bcpg-jdk15on:1.60
-org.bouncycastle:bcpkix-jdk15on:1.60
-org.bouncycastle:bcprov-jdk15on:1.60
-org.codehaus.groovy:groovy-all:2.5.7
-org.codehaus.groovy:groovy-ant:2.5.7
-org.codehaus.groovy:groovy-cli-commons:2.5.7
-org.codehaus.groovy:groovy-cli-picocli:2.5.7
-org.codehaus.groovy:groovy-console:2.5.7
-org.codehaus.groovy:groovy-datetime:2.5.7
-org.codehaus.groovy:groovy-docgenerator:2.5.7
-org.codehaus.groovy:groovy-groovydoc:2.5.7
-org.codehaus.groovy:groovy-groovysh:2.5.7
-org.codehaus.groovy:groovy-jmx:2.5.7
-org.codehaus.groovy:groovy-json:2.5.7
-org.codehaus.groovy:groovy-jsr223:2.5.7
-org.codehaus.groovy:groovy-macro:2.5.7
-org.codehaus.groovy:groovy-nio:2.5.7
-org.codehaus.groovy:groovy-servlet:2.5.7
-org.codehaus.groovy:groovy-sql:2.5.7
-org.codehaus.groovy:groovy-swing:2.5.7
-org.codehaus.groovy:groovy-templates:2.5.7
-org.codehaus.groovy:groovy-test-junit5:2.5.7
-org.codehaus.groovy:groovy-test:2.5.7
-org.codehaus.groovy:groovy-testng:2.5.7
-org.codehaus.groovy:groovy-xml:2.5.7
-org.codehaus.groovy:groovy:2.5.7
-org.eclipse.jgit:org.eclipse.jgit:5.3.0.201903130848-r
+org.bouncycastle:bcpg-jdk15on:1.61
+org.bouncycastle:bcpkix-jdk15on:1.61
+org.bouncycastle:bcprov-jdk15on:1.61
+org.codehaus.groovy:groovy-all:2.5.8
+org.codehaus.groovy:groovy-ant:2.5.8
+org.codehaus.groovy:groovy-cli-commons:2.5.8
+org.codehaus.groovy:groovy-cli-picocli:2.5.8
+org.codehaus.groovy:groovy-console:2.5.8
+org.codehaus.groovy:groovy-datetime:2.5.8
+org.codehaus.groovy:groovy-docgenerator:2.5.8
+org.codehaus.groovy:groovy-groovydoc:2.5.8
+org.codehaus.groovy:groovy-groovysh:2.5.8
+org.codehaus.groovy:groovy-jmx:2.5.8
+org.codehaus.groovy:groovy-json:2.5.8
+org.codehaus.groovy:groovy-jsr223:2.5.8
+org.codehaus.groovy:groovy-macro:2.5.8
+org.codehaus.groovy:groovy-nio:2.5.8
+org.codehaus.groovy:groovy-servlet:2.5.8
+org.codehaus.groovy:groovy-sql:2.5.8
+org.codehaus.groovy:groovy-swing:2.5.8
+org.codehaus.groovy:groovy-templates:2.5.8
+org.codehaus.groovy:groovy-test-junit5:2.5.8
+org.codehaus.groovy:groovy-test:2.5.8
+org.codehaus.groovy:groovy-testng:2.5.8
+org.codehaus.groovy:groovy-xml:2.5.8
+org.codehaus.groovy:groovy:2.5.8
+org.eclipse.jgit:org.eclipse.jgit:5.5.1.201910021850-r
 org.hamcrest:hamcrest-core:1.3
 org.junit.platform:junit-platform-commons:1.4.0
 org.junit.platform:junit-platform-engine:1.4.0
 org.junit.platform:junit-platform-launcher:1.4.0
 org.opentest4j:opentest4j:1.1.1
-org.slf4j:slf4j-api:1.7.26
+org.slf4j:slf4j-api:1.7.29
 org.spockframework:spock-core:1.2-groovy-2.5
diff --git a/reckon-core/gradle/dependency-locks/testRuntimeClasspath.lockfile b/reckon-core/gradle/dependency-locks/testRuntimeClasspath.lockfile
index 4e72f4b1..cf8ae530 100644
--- a/reckon-core/gradle/dependency-locks/testRuntimeClasspath.lockfile
+++ b/reckon-core/gradle/dependency-locks/testRuntimeClasspath.lockfile
@@ -4,47 +4,47 @@
 com.beust:jcommander:1.72
 com.github.zafarkhaja:java-semver:0.9.0
 com.googlecode.javaewah:JavaEWAH:1.1.6
-com.jcraft:jsch:0.1.54
+com.jcraft:jsch:0.1.55
 com.jcraft:jzlib:1.1.1
 com.thoughtworks.qdox:qdox:1.12.1
 commons-cli:commons-cli:1.4
-info.picocli:picocli:3.9.5
+info.picocli:picocli:4.0.1
 jline:jline:2.14.6
 junit:junit:4.12
-org.ajoberstar.grgit:grgit-core:3.1.1
+org.ajoberstar.grgit:grgit-core:4.0.0
 org.apache.ant:ant-antlr:1.9.13
 org.apache.ant:ant-junit:1.9.13
 org.apache.ant:ant-launcher:1.9.13
 org.apache.ant:ant:1.9.13
 org.apache.commons:commons-lang3:3.9
 org.apiguardian:apiguardian-api:1.0.0
-org.bouncycastle:bcpg-jdk15on:1.60
-org.bouncycastle:bcpkix-jdk15on:1.60
-org.bouncycastle:bcprov-jdk15on:1.60
-org.codehaus.groovy:groovy-all:2.5.7
-org.codehaus.groovy:groovy-ant:2.5.7
-org.codehaus.groovy:groovy-cli-commons:2.5.7
-org.codehaus.groovy:groovy-cli-picocli:2.5.7
-org.codehaus.groovy:groovy-console:2.5.7
-org.codehaus.groovy:groovy-datetime:2.5.7
-org.codehaus.groovy:groovy-docgenerator:2.5.7
-org.codehaus.groovy:groovy-groovydoc:2.5.7
-org.codehaus.groovy:groovy-groovysh:2.5.7
-org.codehaus.groovy:groovy-jmx:2.5.7
-org.codehaus.groovy:groovy-json:2.5.7
-org.codehaus.groovy:groovy-jsr223:2.5.7
-org.codehaus.groovy:groovy-macro:2.5.7
-org.codehaus.groovy:groovy-nio:2.5.7
-org.codehaus.groovy:groovy-servlet:2.5.7
-org.codehaus.groovy:groovy-sql:2.5.7
-org.codehaus.groovy:groovy-swing:2.5.7
-org.codehaus.groovy:groovy-templates:2.5.7
-org.codehaus.groovy:groovy-test-junit5:2.5.7
-org.codehaus.groovy:groovy-test:2.5.7
-org.codehaus.groovy:groovy-testng:2.5.7
-org.codehaus.groovy:groovy-xml:2.5.7
-org.codehaus.groovy:groovy:2.5.7
-org.eclipse.jgit:org.eclipse.jgit:5.3.0.201903130848-r
+org.bouncycastle:bcpg-jdk15on:1.61
+org.bouncycastle:bcpkix-jdk15on:1.61
+org.bouncycastle:bcprov-jdk15on:1.61
+org.codehaus.groovy:groovy-all:2.5.8
+org.codehaus.groovy:groovy-ant:2.5.8
+org.codehaus.groovy:groovy-cli-commons:2.5.8
+org.codehaus.groovy:groovy-cli-picocli:2.5.8
+org.codehaus.groovy:groovy-console:2.5.8
+org.codehaus.groovy:groovy-datetime:2.5.8
+org.codehaus.groovy:groovy-docgenerator:2.5.8
+org.codehaus.groovy:groovy-groovydoc:2.5.8
+org.codehaus.groovy:groovy-groovysh:2.5.8
+org.codehaus.groovy:groovy-jmx:2.5.8
+org.codehaus.groovy:groovy-json:2.5.8
+org.codehaus.groovy:groovy-jsr223:2.5.8
+org.codehaus.groovy:groovy-macro:2.5.8
+org.codehaus.groovy:groovy-nio:2.5.8
+org.codehaus.groovy:groovy-servlet:2.5.8
+org.codehaus.groovy:groovy-sql:2.5.8
+org.codehaus.groovy:groovy-swing:2.5.8
+org.codehaus.groovy:groovy-templates:2.5.8
+org.codehaus.groovy:groovy-test-junit5:2.5.8
+org.codehaus.groovy:groovy-test:2.5.8
+org.codehaus.groovy:groovy-testng:2.5.8
+org.codehaus.groovy:groovy-xml:2.5.8
+org.codehaus.groovy:groovy:2.5.8
+org.eclipse.jgit:org.eclipse.jgit:5.5.1.201910021850-r
 org.hamcrest:hamcrest-core:1.3
 org.junit.jupiter:junit-jupiter-api:5.4.0
 org.junit.jupiter:junit-jupiter-engine:5.4.0
@@ -52,7 +52,7 @@ org.junit.platform:junit-platform-commons:1.4.0
 org.junit.platform:junit-platform-engine:1.4.0
 org.junit.platform:junit-platform-launcher:1.4.0
 org.opentest4j:opentest4j:1.1.1
-org.slf4j:slf4j-api:1.7.26
-org.slf4j:slf4j-simple:1.7.26
+org.slf4j:slf4j-api:1.7.29
+org.slf4j:slf4j-simple:1.7.29
 org.spockframework:spock-core:1.2-groovy-2.5
 org.testng:testng:6.13.1
diff --git a/reckon-gradle/.stutter/java11.lock b/reckon-gradle/.stutter/java11.lock
index 793d956b..f42aa017 100644
--- a/reckon-gradle/.stutter/java11.lock
+++ b/reckon-gradle/.stutter/java11.lock
@@ -1,3 +1,5 @@
 # DO NOT MODIFY: Generated by Stutter plugin.
 5.0
-5.4.1
+5.6.4
+6.0.1
+6.1-milestone-1
diff --git a/reckon-gradle/.stutter/java13.lock b/reckon-gradle/.stutter/java13.lock
new file mode 100644
index 00000000..e603d361
--- /dev/null
+++ b/reckon-gradle/.stutter/java13.lock
@@ -0,0 +1,3 @@
+# DO NOT MODIFY: Generated by Stutter plugin.
+6.0.1
+6.1-milestone-1
diff --git a/reckon-gradle/.stutter/java8.lock b/reckon-gradle/.stutter/java8.lock
index 48a049b8..8c2a7c88 100644
--- a/reckon-gradle/.stutter/java8.lock
+++ b/reckon-gradle/.stutter/java8.lock
@@ -1,7 +1,7 @@
 # DO NOT MODIFY: Generated by Stutter plugin.
-3.0
-3.5.1
 4.0.2
 4.10.3
 5.0
-5.4.1
+5.6.4
+6.0.1
+6.1-milestone-1
diff --git a/reckon-gradle/build.gradle b/reckon-gradle/build.gradle
index 4cffb3ee..1a8a5bc1 100644
--- a/reckon-gradle/build.gradle
+++ b/reckon-gradle/build.gradle
@@ -36,11 +36,14 @@ stutter {
   sparse = true
 
   java(8) {
-    compatibleRange '3.0'
+    compatibleRange '4.0'
   }
   java(11) {
     compatibleRange '5.0'
   }
+  java(13) {
+    compatibleRange '6.0'
+  }
 }
 
 pluginBundle {
diff --git a/reckon-gradle/gradle/dependency-locks/compatTestCompileClasspath.lockfile b/reckon-gradle/gradle/dependency-locks/compatTestCompileClasspath.lockfile
index 2bb0ad89..3a163fc1 100644
--- a/reckon-gradle/gradle/dependency-locks/compatTestCompileClasspath.lockfile
+++ b/reckon-gradle/gradle/dependency-locks/compatTestCompileClasspath.lockfile
@@ -2,14 +2,14 @@
 # Manual edits can break the build and are not advised.
 # This file is expected to be part of source control.
 com.googlecode.javaewah:JavaEWAH:1.1.6
-com.jcraft:jsch:0.1.54
+com.jcraft:jsch:0.1.55
 com.jcraft:jzlib:1.1.1
-junit:junit:4.13-beta-2
-org.ajoberstar.grgit:grgit-core:3.1.1
-org.bouncycastle:bcpg-jdk15on:1.60
-org.bouncycastle:bcpkix-jdk15on:1.60
-org.bouncycastle:bcprov-jdk15on:1.60
-org.eclipse.jgit:org.eclipse.jgit:5.3.0.201903130848-r
+junit:junit:4.13-rc-1
+org.ajoberstar.grgit:grgit-core:4.0.0
+org.bouncycastle:bcpg-jdk15on:1.61
+org.bouncycastle:bcpkix-jdk15on:1.61
+org.bouncycastle:bcprov-jdk15on:1.61
+org.eclipse.jgit:org.eclipse.jgit:5.5.1.201910021850-r
 org.hamcrest:hamcrest-core:1.3
 org.slf4j:slf4j-api:1.7.2
 org.spockframework:spock-core:1.2-groovy-2.5
diff --git a/reckon-gradle/gradle/dependency-locks/compatTestRuntimeClasspath.lockfile b/reckon-gradle/gradle/dependency-locks/compatTestRuntimeClasspath.lockfile
index 2bb0ad89..3a163fc1 100644
--- a/reckon-gradle/gradle/dependency-locks/compatTestRuntimeClasspath.lockfile
+++ b/reckon-gradle/gradle/dependency-locks/compatTestRuntimeClasspath.lockfile
@@ -2,14 +2,14 @@
 # Manual edits can break the build and are not advised.
 # This file is expected to be part of source control.
 com.googlecode.javaewah:JavaEWAH:1.1.6
-com.jcraft:jsch:0.1.54
+com.jcraft:jsch:0.1.55
 com.jcraft:jzlib:1.1.1
-junit:junit:4.13-beta-2
-org.ajoberstar.grgit:grgit-core:3.1.1
-org.bouncycastle:bcpg-jdk15on:1.60
-org.bouncycastle:bcpkix-jdk15on:1.60
-org.bouncycastle:bcprov-jdk15on:1.60
-org.eclipse.jgit:org.eclipse.jgit:5.3.0.201903130848-r
+junit:junit:4.13-rc-1
+org.ajoberstar.grgit:grgit-core:4.0.0
+org.bouncycastle:bcpg-jdk15on:1.61
+org.bouncycastle:bcpkix-jdk15on:1.61
+org.bouncycastle:bcprov-jdk15on:1.61
+org.eclipse.jgit:org.eclipse.jgit:5.5.1.201910021850-r
 org.hamcrest:hamcrest-core:1.3
 org.slf4j:slf4j-api:1.7.2
 org.spockframework:spock-core:1.2-groovy-2.5
diff --git a/reckon-gradle/gradle/dependency-locks/compileClasspath.lockfile b/reckon-gradle/gradle/dependency-locks/compileClasspath.lockfile
index d3153f74..97a05783 100644
--- a/reckon-gradle/gradle/dependency-locks/compileClasspath.lockfile
+++ b/reckon-gradle/gradle/dependency-locks/compileClasspath.lockfile
@@ -2,20 +2,20 @@
 # Manual edits can break the build and are not advised.
 # This file is expected to be part of source control.
 com.google.code.findbugs:jsr305:3.0.2
-com.google.errorprone:error_prone_annotations:2.2.0
+com.google.errorprone:error_prone_annotations:2.3.2
 com.google.guava:failureaccess:1.0.1
-com.google.guava:guava:27.1-jre
+com.google.guava:guava:28.1-jre
 com.google.guava:listenablefuture:9999.0-empty-to-avoid-conflict-with-guava
-com.google.j2objc:j2objc-annotations:1.1
+com.google.j2objc:j2objc-annotations:1.3
 com.googlecode.javaewah:JavaEWAH:1.1.6
-com.jcraft:jsch:0.1.54
+com.jcraft:jsch:0.1.55
 com.jcraft:jzlib:1.1.1
-org.ajoberstar.grgit:grgit-core:3.1.1
-org.ajoberstar.grgit:grgit-gradle:3.1.1
-org.bouncycastle:bcpg-jdk15on:1.60
-org.bouncycastle:bcpkix-jdk15on:1.60
-org.bouncycastle:bcprov-jdk15on:1.60
-org.checkerframework:checker-qual:2.5.2
-org.codehaus.mojo:animal-sniffer-annotations:1.17
-org.eclipse.jgit:org.eclipse.jgit:5.3.0.201903130848-r
+org.ajoberstar.grgit:grgit-core:4.0.0
+org.ajoberstar.grgit:grgit-gradle:4.0.0
+org.bouncycastle:bcpg-jdk15on:1.61
+org.bouncycastle:bcpkix-jdk15on:1.61
+org.bouncycastle:bcprov-jdk15on:1.61
+org.checkerframework:checker-qual:2.8.1
+org.codehaus.mojo:animal-sniffer-annotations:1.18
+org.eclipse.jgit:org.eclipse.jgit:5.5.1.201910021850-r
 org.slf4j:slf4j-api:1.7.2
diff --git a/reckon-gradle/gradle/dependency-locks/runtimeClasspath.lockfile b/reckon-gradle/gradle/dependency-locks/runtimeClasspath.lockfile
index 2c6964d8..954c5bd6 100644
--- a/reckon-gradle/gradle/dependency-locks/runtimeClasspath.lockfile
+++ b/reckon-gradle/gradle/dependency-locks/runtimeClasspath.lockfile
@@ -3,21 +3,21 @@
 # This file is expected to be part of source control.
 com.github.zafarkhaja:java-semver:0.9.0
 com.google.code.findbugs:jsr305:3.0.2
-com.google.errorprone:error_prone_annotations:2.2.0
+com.google.errorprone:error_prone_annotations:2.3.2
 com.google.guava:failureaccess:1.0.1
-com.google.guava:guava:27.1-jre
+com.google.guava:guava:28.1-jre
 com.google.guava:listenablefuture:9999.0-empty-to-avoid-conflict-with-guava
-com.google.j2objc:j2objc-annotations:1.1
+com.google.j2objc:j2objc-annotations:1.3
 com.googlecode.javaewah:JavaEWAH:1.1.6
-com.jcraft:jsch:0.1.54
+com.jcraft:jsch:0.1.55
 com.jcraft:jzlib:1.1.1
-org.ajoberstar.grgit:grgit-core:3.1.1
-org.ajoberstar.grgit:grgit-gradle:3.1.1
+org.ajoberstar.grgit:grgit-core:4.0.0
+org.ajoberstar.grgit:grgit-gradle:4.0.0
 org.apache.commons:commons-lang3:3.9
-org.bouncycastle:bcpg-jdk15on:1.60
-org.bouncycastle:bcpkix-jdk15on:1.60
-org.bouncycastle:bcprov-jdk15on:1.60
-org.checkerframework:checker-qual:2.5.2
-org.codehaus.mojo:animal-sniffer-annotations:1.17
-org.eclipse.jgit:org.eclipse.jgit:5.3.0.201903130848-r
-org.slf4j:slf4j-api:1.7.26
+org.bouncycastle:bcpg-jdk15on:1.61
+org.bouncycastle:bcpkix-jdk15on:1.61
+org.bouncycastle:bcprov-jdk15on:1.61
+org.checkerframework:checker-qual:2.8.1
+org.codehaus.mojo:animal-sniffer-annotations:1.18
+org.eclipse.jgit:org.eclipse.jgit:5.5.1.201910021850-r
+org.slf4j:slf4j-api:1.7.29
diff --git a/reckon-gradle/gradle/dependency-locks/testCompileClasspath.lockfile b/reckon-gradle/gradle/dependency-locks/testCompileClasspath.lockfile
index d3153f74..97a05783 100644
--- a/reckon-gradle/gradle/dependency-locks/testCompileClasspath.lockfile
+++ b/reckon-gradle/gradle/dependency-locks/testCompileClasspath.lockfile
@@ -2,20 +2,20 @@
 # Manual edits can break the build and are not advised.
 # This file is expected to be part of source control.
 com.google.code.findbugs:jsr305:3.0.2
-com.google.errorprone:error_prone_annotations:2.2.0
+com.google.errorprone:error_prone_annotations:2.3.2
 com.google.guava:failureaccess:1.0.1
-com.google.guava:guava:27.1-jre
+com.google.guava:guava:28.1-jre
 com.google.guava:listenablefuture:9999.0-empty-to-avoid-conflict-with-guava
-com.google.j2objc:j2objc-annotations:1.1
+com.google.j2objc:j2objc-annotations:1.3
 com.googlecode.javaewah:JavaEWAH:1.1.6
-com.jcraft:jsch:0.1.54
+com.jcraft:jsch:0.1.55
 com.jcraft:jzlib:1.1.1
-org.ajoberstar.grgit:grgit-core:3.1.1
-org.ajoberstar.grgit:grgit-gradle:3.1.1
-org.bouncycastle:bcpg-jdk15on:1.60
-org.bouncycastle:bcpkix-jdk15on:1.60
-org.bouncycastle:bcprov-jdk15on:1.60
-org.checkerframework:checker-qual:2.5.2
-org.codehaus.mojo:animal-sniffer-annotations:1.17
-org.eclipse.jgit:org.eclipse.jgit:5.3.0.201903130848-r
+org.ajoberstar.grgit:grgit-core:4.0.0
+org.ajoberstar.grgit:grgit-gradle:4.0.0
+org.bouncycastle:bcpg-jdk15on:1.61
+org.bouncycastle:bcpkix-jdk15on:1.61
+org.bouncycastle:bcprov-jdk15on:1.61
+org.checkerframework:checker-qual:2.8.1
+org.codehaus.mojo:animal-sniffer-annotations:1.18
+org.eclipse.jgit:org.eclipse.jgit:5.5.1.201910021850-r
 org.slf4j:slf4j-api:1.7.2
diff --git a/reckon-gradle/gradle/dependency-locks/testRuntimeClasspath.lockfile b/reckon-gradle/gradle/dependency-locks/testRuntimeClasspath.lockfile
index 2c6964d8..954c5bd6 100644
--- a/reckon-gradle/gradle/dependency-locks/testRuntimeClasspath.lockfile
+++ b/reckon-gradle/gradle/dependency-locks/testRuntimeClasspath.lockfile
@@ -3,21 +3,21 @@
 # This file is expected to be part of source control.
 com.github.zafarkhaja:java-semver:0.9.0
 com.google.code.findbugs:jsr305:3.0.2
-com.google.errorprone:error_prone_annotations:2.2.0
+com.google.errorprone:error_prone_annotations:2.3.2
 com.google.guava:failureaccess:1.0.1
-com.google.guava:guava:27.1-jre
+com.google.guava:guava:28.1-jre
 com.google.guava:listenablefuture:9999.0-empty-to-avoid-conflict-with-guava
-com.google.j2objc:j2objc-annotations:1.1
+com.google.j2objc:j2objc-annotations:1.3
 com.googlecode.javaewah:JavaEWAH:1.1.6
-com.jcraft:jsch:0.1.54
+com.jcraft:jsch:0.1.55
 com.jcraft:jzlib:1.1.1
-org.ajoberstar.grgit:grgit-core:3.1.1
-org.ajoberstar.grgit:grgit-gradle:3.1.1
+org.ajoberstar.grgit:grgit-core:4.0.0
+org.ajoberstar.grgit:grgit-gradle:4.0.0
 org.apache.commons:commons-lang3:3.9
-org.bouncycastle:bcpg-jdk15on:1.60
-org.bouncycastle:bcpkix-jdk15on:1.60
-org.bouncycastle:bcprov-jdk15on:1.60
-org.checkerframework:checker-qual:2.5.2
-org.codehaus.mojo:animal-sniffer-annotations:1.17
-org.eclipse.jgit:org.eclipse.jgit:5.3.0.201903130848-r
-org.slf4j:slf4j-api:1.7.26
+org.bouncycastle:bcpg-jdk15on:1.61
+org.bouncycastle:bcpkix-jdk15on:1.61
+org.bouncycastle:bcprov-jdk15on:1.61
+org.checkerframework:checker-qual:2.8.1
+org.codehaus.mojo:animal-sniffer-annotations:1.18
+org.eclipse.jgit:org.eclipse.jgit:5.5.1.201910021850-r
+org.slf4j:slf4j-api:1.7.29