diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d0f5f0075a..485034dd56 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -6,6 +6,9 @@ on:
     branches:
       - master
     paths-ignore:
+      - 'build/tools/appveyor*.bat'
+      - 'build/tools/before_install.sh'
+      - 'build/tools/travis-ci.sh'
       - 'distrib/**'
       - 'docs/**'
       - 'interface/**'
@@ -15,6 +18,9 @@ on:
     branches:
       - master
     paths-ignore:
+      - 'build/tools/appveyor*.bat'
+      - 'build/tools/before_install.sh'
+      - 'build/tools/travis-ci.sh'
       - 'distrib/**'
       - 'docs/**'
       - 'interface/**'
diff --git a/.travis.yml b/.travis.yml
index c1e8519c52..cfcec4ace3 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -12,7 +12,7 @@ jobs:
     include:
         - dist: trusty
           compiler: gcc
-          env: wxGTK_VERSION=2 wxUSE_XVFB=1
+          env: wxGTK_VERSION=2 wxUSE_XVFB=1 wxUSE_DOCKER_HTTPBIN=1
           name: wxGTK 2 Ubuntu 14.04
         - dist: bionic
           compiler: gcc
diff --git a/build/tools/travis-ci.sh b/build/tools/travis-ci.sh
index a91947b1dc..18dbcc0d0d 100755
--- a/build/tools/travis-ci.sh
+++ b/build/tools/travis-ci.sh
@@ -16,10 +16,9 @@ launch_httpbin() {
     echo 'travis_fold:start:httpbin'
     echo 'Running httpbin...'
 
-    # Prefer to use docker if it's available as it's more robust than dealing
-    # with pip -- but we need to have a fallback as at least Mac builds don't
-    # have docker.
-    if command -v docker; then
+    # Use docker if configured to do so, this works around Python/pip problems
+    # on some platforms.
+    if [ "$wxUSE_DOCKER_HTTPBIN" = 1 ]; then
         docker pull kennethreitz/httpbin
         docker run -d -p 80:80 kennethreitz/httpbin
         WX_TEST_WEBREQUEST_URL="http://localhost"