diff --git a/circle.yml b/circle.yml
index 5bb2c8a56..5808da7e4 100644
--- a/circle.yml
+++ b/circle.yml
@@ -20,7 +20,7 @@ test:
   override:
     # - tests/test-runner/test-all.sh:
     #    parallel: true
-    - METEOR_COMMAND=/tmp/meteor/meteor tests/test-runner/test-all.sh:
+    - METEOR_COMMAND=/tmp/meteor/meteor METEOR_COMMAND_EXTRA_ARGS="--test-app-path test-app" tests/test-runner/test-all.sh:
         parallel: true
     - cd site; npm run generate
 deployment:
diff --git a/packages/blaze/attrs.js b/packages/blaze/attrs.js
index e49d3e73b..97369cd0b 100644
--- a/packages/blaze/attrs.js
+++ b/packages/blaze/attrs.js
@@ -171,9 +171,7 @@ var StyleHandler = Blaze._DiffingAttributeHandler.extend({
         tokens.remove(match[1]);
       }
 
-      // XXX No `String.trim` on Safari 4. Swap out $.trim if we want to
-      // remove strong dep on jquery.
-      tokens.append(match[1], match[0].trim ? match[0].trim() : $.trim(match[0]));
+      tokens.append(match[1], match[0].trim());
 
       match = regex.exec(attrString);
     }
diff --git a/packages/blaze/package.js b/packages/blaze/package.js
index 35572eb1d..5efa5f24a 100644
--- a/packages/blaze/package.js
+++ b/packages/blaze/package.js
@@ -6,13 +6,14 @@ Package.describe({
 });
 
 Package.onUse(function (api) {
-  api.use('jquery@1.11.9'); // should be a weak dep, by having multiple "DOM backends"
+  api.use('jquery@1.11.9 || 3.0.0', { weak: true }); // should be a weak dep, by having multiple "DOM backends"
   api.use('tracker@1.1.0');
   api.use('check@1.2.3');
   api.use('underscore@1.0.9');
   api.use('observe-sequence@1.0.12');
   api.use('reactive-var@1.0.10');
   api.use('ordered-dict@1.0.9');
+  api.user('ecmascript@0.12.7');
 
   api.export([
     'Blaze',
@@ -50,7 +51,7 @@ Package.onUse(function (api) {
 Package.onTest(function (api) {
   api.use('tinytest@1.0.11');
   api.use('test-helpers@1.0.10');
-  api.use('jquery@1.11.9'); // strong dependency, for testing jQuery backend
+  api.use('jquery@1.11.9 || 3.0.0'); // strong dependency, for testing jQuery backend
   api.use('underscore@1.0.9');
   api.use('reactive-var@1.0.10');
   api.use('tracker@1.1.0');
diff --git a/packages/spacebars-tests/package.js b/packages/spacebars-tests/package.js
index 497deb97c..c0bfd5fd1 100644
--- a/packages/spacebars-tests/package.js
+++ b/packages/spacebars-tests/package.js
@@ -12,7 +12,7 @@ Package.onTest(function (api) {
     'es5-shim@4.6.14',
     'underscore@1.0.9',
     'tinytest@1.0.11',
-    'jquery@1.11.9',
+    'jquery@1.11.9 || 3.0.0',
     'test-helpers@1.0.10',
     'reactive-var@1.0.10',
     'markdown@1.0.10',
diff --git a/test-app/package.json b/test-app/package.json
new file mode 100644
index 000000000..1e87ae04f
--- /dev/null
+++ b/test-app/package.json
@@ -0,0 +1,18 @@
+{
+  "name": "blaze-test-app",
+  "version": "1.0.0",
+  "main": "index.js",
+  "directories": {
+    "test": "tests"
+  },
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "jquery": "^3.4.1",
+    "@babel/runtime": "^7.6.0",
+    "meteor-node-stubs": "^1.0.0"
+  }
+}
diff --git a/tests/test-runner b/tests/test-runner
index 5a1e5b01b..04cc86f63 160000
--- a/tests/test-runner
+++ b/tests/test-runner
@@ -1 +1 @@
-Subproject commit 5a1e5b01b39504bfbf4a42193ca56eade85224f2
+Subproject commit 04cc86f6300cf07cde785461af6a2ff3bacaf26c