diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
new file mode 100644
index 0000000..de349cb
--- /dev/null
+++ b/.github/workflows/test.yml
@@ -0,0 +1,22 @@
+name: test
+
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: dcodeIO/setup-node-nvm@v5
+        with:
+          node-version: iojs
+      - run: npm install
+      - run: npm test
+        env:
+          # Node.js/io.js bundle their own CA store, which is now substantially out of date. io.js predated the `--use-openssl-ca` flag, so we have to disable TLS verification entirely.
+          # Upon upgrading this test suite to a modern Node.js version, this should be removed.
+          NODE_TLS_REJECT_UNAUTHORIZED: '0'
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 785901c..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,3 +0,0 @@
-language: node_js
-node_js:
-  - iojs
diff --git a/README.md b/README.md
index d692b5b..0f3bcb4 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# browserify-shim [![build status](https://secure.travis-ci.org/thlorenz/browserify-shim.svg?branch=master)](http://travis-ci.org/thlorenz/browserify-shim)
+# browserify-shim
 
 ### Make CommonJS-Incompatible Files Browserifyable
 
diff --git a/test/bundle-deps.js b/test/bundle-deps.js
index a0563c4..49f8e0c 100644
--- a/test/bundle-deps.js
+++ b/test/bundle-deps.js
@@ -9,7 +9,7 @@ function bundleNcheck(relPath, t) {
   browserify( { ignoreGlobals: true })
     .require(require.resolve(relPath))
     .bundle(function (err, src) {
-      if (err) { t.fail(err); return t.end(); }
+      if (err) { t.fail(err.message); return t.end(); }
 
       var ctx = { window: {}, console: console };
       ctx.self = ctx.window;
diff --git a/test/bundle-ember-bower.js b/test/bundle-ember-bower.js
index fd64039..3620f22 100644
--- a/test/bundle-ember-bower.js
+++ b/test/bundle-ember-bower.js
@@ -16,7 +16,7 @@ function bundleNcheck(relPath, t) {
   browserify( { ignoreGlobals: true })
     .require(require.resolve(relPath))
     .bundle(function (err, src) {
-      if (err) { t.fail(err); return t.end(); }
+      if (err) { t.fail(err.message); return t.end(); }
 
       var ctx = { window: {}, console: console };
       ctx.self = ctx.window;
diff --git a/test/bundle-expose-globals.js b/test/bundle-expose-globals.js
index 10faa2d..e73c9df 100644
--- a/test/bundle-expose-globals.js
+++ b/test/bundle-expose-globals.js
@@ -14,7 +14,7 @@ function bundleNcheck(relPath, t) {
   browserify( { ignoreGlobals: true })
     .require(require.resolve(relPath))
     .bundle(function (err, src) {
-      if (err) { t.fail(err); return t.end(); }
+      if (err) { t.fail(err.message); return t.end(); }
 
       var ctx = { window: { $: jquery }, console: console };
       ctx.self = ctx.window;
diff --git a/test/bundle-invalid-require.js b/test/bundle-invalid-require.js
index 905529e..00b686c 100644
--- a/test/bundle-invalid-require.js
+++ b/test/bundle-invalid-require.js
@@ -15,7 +15,7 @@ function bundleNcheck(relPath, t) {
   browserify( { ignoreGlobals: true })
     .require(require.resolve(relPath))
     .bundle(function (err, src) {
-      if (err) { t.fail(err); return t.end(); }
+      if (err) { t.fail(err.message); return t.end(); }
 
       var ctx = { window: {}, console: console };
       ctx.self = ctx.window;
diff --git a/test/bundle-multideps.js b/test/bundle-multideps.js
index aab0a29..8eadaf7 100644
--- a/test/bundle-multideps.js
+++ b/test/bundle-multideps.js
@@ -13,7 +13,7 @@ function bundleNcheck(relPath, t) {
   browserify( { ignoreGlobals: true })
     .require(require.resolve(relPath))
     .bundle(function (err, src) {
-      if (err) { t.fail(err); return t.end(); }
+      if (err) { t.fail(err.message); return t.end(); }
 
       var ctx = { window: {}, console: console };
       ctx.self = ctx.window;
diff --git a/test/bundle-nodeps.js b/test/bundle-nodeps.js
index 80d2261..90ecb31 100644
--- a/test/bundle-nodeps.js
+++ b/test/bundle-nodeps.js
@@ -13,7 +13,7 @@ function bundleNcheck(relPath, t) {
   browserify( { ignoreGlobals: true })
     .require(require.resolve(relPath))
     .bundle(function (err, src) {
-      if (err) { t.fail(err); return t.end(); }
+      if (err) { t.fail(err.message); return t.end(); }
 
       var ctx = { window: {}, console: console };
       ctx.self = ctx.window;
diff --git a/test/bundle-pack-bower.js b/test/bundle-pack-bower.js
index 4fae0e2..f2c4b62 100644
--- a/test/bundle-pack-bower.js
+++ b/test/bundle-pack-bower.js
@@ -12,7 +12,7 @@ function bundleNcheck(relPath, t) {
   browserify( { ignoreGlobals: true })
     .require(require.resolve(relPath))
     .bundle(function (err, src) {
-      if (err) { t.fail(err); return t.end(); }
+      if (err) { t.fail(err.message); return t.end(); }
 
       var ctx = { window: {}, console: console };
       ctx.self = ctx.window;
diff --git a/test/bundle-packs.js b/test/bundle-packs.js
index 50c5c6e..3093b84 100644
--- a/test/bundle-packs.js
+++ b/test/bundle-packs.js
@@ -13,7 +13,7 @@ function bundleNcheck(relPath, t) {
   browserify( { ignoreGlobals: true })
     .require(require.resolve(relPath))
     .bundle(function (err, src) {
-      if (err) { t.fail(err); return t.end(); }
+      if (err) { t.fail(err.message); return t.end(); }
 
       var ctx = { window: {}, console: console };
       ctx.self = ctx.window;
diff --git a/test/resolve-shims-bower.js b/test/resolve-shims-bower.js
index 7a08183..9da48eb 100644
--- a/test/resolve-shims-bower.js
+++ b/test/resolve-shims-bower.js
@@ -15,7 +15,7 @@ function inspect(obj, depth) {
 test('\nresolving a bower component that is shimmed', function (t) {
   resolve(require.resolve('./bower/components/jquery-ui/ui/jquery.ui.position.js'), msgs, function (err, res) {
 
-    if (err) { t.fail(err); return t.end(); }
+    if (err) { t.fail(err.message); return t.end(); }
     t.deepEqual(res.shim, { exports: null, depends: { jquery: 'jQuery' } }, 'resolves shim correctly')
     t.end();
   })
diff --git a/test/resolve-shims.js b/test/resolve-shims.js
index 7fcf51c..4e9dcd7 100644
--- a/test/resolve-shims.js
+++ b/test/resolve-shims.js
@@ -14,7 +14,7 @@ function inspect(obj, depth) {
 
 test('\nno dependencies, external shim file, no expose', function (t) {
   resolve(require.resolve('./nodeps/extshim/vendor/non-cjs'), msgs, function (err, res) {
-    if (err) { t.fail(err); return t.end(); }
+    if (err) { t.fail(err.message); return t.end(); }
     t.deepEqual(res.shim, { exports: 'noncjs', depends: undefined }, 'resolves noncjs shim correctly')
     t.end();
   });
@@ -22,7 +22,7 @@ test('\nno dependencies, external shim file, no expose', function (t) {
 
 test('\nno dependencies, external shim, exposed as non-cjs', function (t) {
   resolve(require.resolve('./nodeps/extshim-exposed/vendor/non-cjs'), msgs, function (err, res) {
-    if (err) { t.fail(err); return t.end(); }
+    if (err) { t.fail(err.message); return t.end(); }
     t.deepEqual(res.shim, { exports: 'noncjs', depends: undefined }, 'resolves noncjs shim correctly')
     t.end();
   });
@@ -30,7 +30,7 @@ test('\nno dependencies, external shim, exposed as non-cjs', function (t) {
 
 test('\nno dependencies, inline shims, no expose', function (t) {
   resolve(require.resolve('./nodeps/inlineshim/vendor/non-cjs'), msgs, function (err, res) {
-    if (err) { t.fail(err); return t.end(); }
+    if (err) { t.fail(err.message); return t.end(); }
     t.deepEqual(res.shim, { exports: 'noncjs', depends: undefined }, 'resolves noncjs shim correctly')
     t.end();
   });
@@ -38,7 +38,7 @@ test('\nno dependencies, inline shims, no expose', function (t) {
 
 test('\nno dependencies, inline shims, exposed as non-cjs', function (t) {
   resolve(require.resolve('./nodeps/inlineshim-exposed/vendor/non-cjs'), msgs, function (err, res) {
-    if (err) { t.fail(err); return t.end(); }
+    if (err) { t.fail(err.message); return t.end(); }
     t.deepEqual(res.shim, { exports: 'noncjs', depends: undefined }, 'resolves noncjs shim correctly')
     t.end();
   });
@@ -46,7 +46,7 @@ test('\nno dependencies, inline shims, exposed as non-cjs', function (t) {
 
 test('\nnon-cjs-dep depends on non-cjs, external shim file, all exposed', function (t) {
   resolve(require.resolve('./deps/extshim/vendor/non-cjs-dep'), msgs, function (err, res) {
-    if (err) { t.fail(err); return t.end(); }
+    if (err) { t.fail(err.message); return t.end(); }
     t.deepEqual(res.shim
      , { exports: 'noncjsdep', depends: { 'non-cjs': 'noncjs' } }
      , 'resolves noncjsdep shim correctly'
@@ -57,7 +57,7 @@ test('\nnon-cjs-dep depends on non-cjs, external shim file, all exposed', functi
 
 test('\nnon-cjs-dep depends on non-cjs, inline shims, all exposed', function (t) {
   resolve(require.resolve('./deps/inlineshim/vendor/non-cjs-dep'), msgs, function (err, res) {
-    if (err) { t.fail(err); return t.end(); }
+    if (err) { t.fail(err.message); return t.end(); }
     t.deepEqual(res.shim
      , { exports: 'noncjsdep', depends: { 'non-cjs': 'noncjs' } }
      , 'resolves noncjsdep shim correctly'
@@ -68,7 +68,7 @@ test('\nnon-cjs-dep depends on non-cjs, inline shims, all exposed', function (t)
 
 test('\nnon-cjs-dep depends on non-cjs and non-cjs-core, external shim file, all exposed except non-cjs-core', function (t) {
   resolve(require.resolve('./multideps/extshim/vendor/non-cjs-dep'), msgs, function (err, res) {
-    if (err) { t.fail(err); return t.end(); }
+    if (err) { t.fail(err.message); return t.end(); }
     var corePath = path.join(__dirname, 'multideps/extshim/vendor/non-cjs-core.js');
     var depends = { 'non-cjs': 'noncjs' }
     depends[corePath] = 'core';
@@ -83,7 +83,7 @@ test('\nnon-cjs-dep depends on non-cjs and non-cjs-core, external shim file, all
 
 test('\nnon-cjs-dep depends on non-cjs and non-cjs-core, inline shims, all exposed except non-cjs-core', function (t) {
   resolve(require.resolve('./multideps/inlineshim/vendor/non-cjs-dep'), msgs, function (err, res) {
-    if (err) { t.fail(err); return t.end(); }
+    if (err) { t.fail(err.message); return t.end(); }
     var corePath = path.join(__dirname, 'multideps/inlineshim/vendor/non-cjs-core.js');
     var depends = { 'non-cjs': 'noncjs' }
     depends[corePath] = 'core';
@@ -98,7 +98,7 @@ test('\nnon-cjs-dep depends on non-cjs and non-cjs-core, inline shims, all expos
 
 test('\nno dependencies, inline shims, no expose, $ exposified as jquery', function (t) {
   resolve(require.resolve('./exposify/inlineshim/vendor/non-cjs'), msgs, function (err, res) {
-    if (err) { t.fail(err); return t.end(); }
+    if (err) { t.fail(err.message); return t.end(); }
     t.deepEqual(res.shim, { exports: 'noncjs', depends: undefined }, 'resolves noncjs shim correctly')
     t.deepEqual(res.exposeGlobals, { jquery: '$' }, 'resolves expose globals correctly')
     t.end();
@@ -107,7 +107,7 @@ test('\nno dependencies, inline shims, no expose, $ exposified as jquery', funct
 
 test('\nno dependencies, external shims, no expose, $ exposified as jquery', function (t) {
   resolve(require.resolve('./exposify/extshim/vendor/non-cjs'), msgs, function (err, res) {
-    if (err) { t.fail(err); return t.end(); }
+    if (err) { t.fail(err.message); return t.end(); }
     t.deepEqual(res.shim, { exports: 'noncjs', depends: undefined }, 'resolves noncjs shim correctly')
     t.deepEqual(res.exposeGlobals, { jquery: '$' }, 'resolves expose globals correctly')
     t.end();
diff --git a/test/shim/shim-depends.js b/test/shim/shim-depends.js
index 87d02a0..6b5e39b 100644
--- a/test/shim/shim-depends.js
+++ b/test/shim/shim-depends.js
@@ -65,7 +65,7 @@ test('\nwhen I shim "jquery" and shim a lib that depends on it', function (t) {
   var entry = require.resolve('./fixtures/entry-requires-depend-on-jquery');
 
   runFirstBundle(entry, false, function (err, require_) {
-    if (err) { t.fail(err); return t.end(); }
+    if (err) { t.fail(err.message); return t.end(); }
     
     var dep = require_(1);
     t.equal(dep.jqVersion, '1.8.3', 'when dependent gets required, $ is attached to the window');
@@ -79,7 +79,7 @@ test('\nwhen I shim "jquery" and shim a lib that depends on it, using fullPaths'
   var entry = require.resolve('./fixtures/entry-requires-depend-on-jquery');
 
   runFirstBundle(entry, true, function (err, require_) {
-    if (err) { t.fail(err); return t.end(); }
+    if (err) { t.fail(err.message); return t.end(); }
     
     var dep = require_(entry);
     t.equal(dep.jqVersion, '1.8.3', 'when dependent gets required, $ is attached to the window');
@@ -117,7 +117,7 @@ test('\nwhen I shim "jquery" and _ lib in debug mode and shim a lib that depends
 
   var entry = require.resolve('./fixtures/entry-requires-depend-on-jquery-and-_');
   runSecondBundle(entry, false, function (err, require_) {
-    if (err) { t.fail(err); return t.end(); }
+    if (err) { t.fail(err.message); return t.end(); }
 
     var dep = require_(1);
 
@@ -132,7 +132,7 @@ test('\nwhen I shim "jquery" and _ lib in debug mode and shim a lib that depends
 
   var entry = require.resolve('./fixtures/entry-requires-depend-on-jquery-and-_');
   runSecondBundle(entry, true, function (err, require_) {
-    if (err) { t.fail(err); return t.end(); }
+    if (err) { t.fail(err.message); return t.end(); }
 
     var dep = require_(entry);