diff --git a/components/RepeatDelayed.js b/components/RepeatDelayed.js
index 5751517..79f520c 100644
--- a/components/RepeatDelayed.js
+++ b/components/RepeatDelayed.js
@@ -23,7 +23,7 @@ exports.getComponent = () => {
   });
 
   c.tearDown = (callback) => {
-    c.timers.forEach(timer => clearTimeout(timer));
+    c.timers.forEach((timer) => clearTimeout(timer));
     c.timers = [];
     return callback();
   };
diff --git a/components/RunTimeout.js b/components/RunTimeout.js
index f5ac9a6..25307f0 100644
--- a/components/RunTimeout.js
+++ b/components/RunTimeout.js
@@ -31,7 +31,7 @@ exports.getComponent = () => {
   };
 
   c.tearDown = (callback) => {
-    Object.keys(c.timer).forEach(scope => c.stopTimer(scope));
+    Object.keys(c.timer).forEach((scope) => c.stopTimer(scope));
     callback();
   };
 
diff --git a/package.json b/package.json
index d9ca168..fb6982c 100644
--- a/package.json
+++ b/package.json
@@ -34,15 +34,15 @@
   "devDependencies": {
     "chai": "^4.0.0",
     "coveralls": "^3.0.0",
-    "eslint": "^5.0.1",
-    "eslint-config-airbnb-base": "^13.0.0",
+    "eslint": "^6.5.1",
+    "eslint-config-airbnb-base": "^14.0.0",
     "eslint-plugin-chai": "0.0.1",
     "eslint-plugin-import": "^2.12.0",
-    "eslint-plugin-mocha": "^5.2.0",
+    "eslint-plugin-mocha": "^6.1.1",
     "fbp-spec": "^0.6.0",
     "karma": "^4.0.0",
     "karma-chai": "^0.1.0",
-    "karma-chrome-launcher": "^2.2.0",
+    "karma-chrome-launcher": "^3.1.0",
     "karma-mocha": "^1.3.0",
     "karma-mocha-reporter": "^2.2.5",
     "mocha": "^6.0.0",
diff --git a/spec/mocha/DisconnectAfterPacket.js b/spec/mocha/DisconnectAfterPacket.js
index 4ec91ce..a7692a8 100644
--- a/spec/mocha/DisconnectAfterPacket.js
+++ b/spec/mocha/DisconnectAfterPacket.js
@@ -34,8 +34,8 @@ describe('DisconnectAfterPacket component', () => {
         'DISC',
       ];
       const received = [];
-      out.on('begingroup', group => received.push(`< ${group}`));
-      out.on('data', data => received.push(`DATA ${data}`));
+      out.on('begingroup', (group) => received.push(`< ${group}`));
+      out.on('data', (data) => received.push(`DATA ${data}`));
       out.on('endgroup', () => received.push('>'));
       out.on('disconnect', () => {
         received.push('DISC');
@@ -75,8 +75,8 @@ describe('DisconnectAfterPacket component', () => {
       ];
       const received = [];
       out.on('connect', () => received.push('CONN'));
-      out.on('begingroup', group => received.push(`< ${group}`));
-      out.on('data', data => received.push(`DATA ${data}`));
+      out.on('begingroup', (group) => received.push(`< ${group}`));
+      out.on('data', (data) => received.push(`DATA ${data}`));
       out.on('endgroup', () => received.push('>'));
       out.on('disconnect', () => {
         received.push('DISC');
diff --git a/spec/mocha/Kick.js b/spec/mocha/Kick.js
index 3548aba..3b1eeaa 100644
--- a/spec/mocha/Kick.js
+++ b/spec/mocha/Kick.js
@@ -117,8 +117,8 @@ describe('Kick component', () => {
       ];
       const received = [];
       out.on('connect', () => received.push('CONN'));
-      out.on('begingroup', group => received.push(`< ${group}`));
-      out.on('data', d => received.push(`DATA ${JSON.stringify(d)}`));
+      out.on('begingroup', (group) => received.push(`< ${group}`));
+      out.on('data', (d) => received.push(`DATA ${JSON.stringify(d)}`));
       out.on('endgroup', () => received.push('>'));
       out.on('disconnect', () => {
         received.push('DISC');
@@ -127,7 +127,7 @@ describe('Kick component', () => {
       });
 
       data.send({ foo: 'bar' });
-      ['foo', 'bar'].forEach(grp => ins.beginGroup(grp));
+      ['foo', 'bar'].forEach((grp) => ins.beginGroup(grp));
       ins.send('foo');
       ['foo', 'bar'].forEach(() => ins.endGroup());
       ins.disconnect();
diff --git a/spec/mocha/MakeFunction.js b/spec/mocha/MakeFunction.js
index 37f9758..5dcce17 100644
--- a/spec/mocha/MakeFunction.js
+++ b/spec/mocha/MakeFunction.js
@@ -62,7 +62,7 @@ describe('MakeFunction component', () => {
         chai.expect(data(2)).to.equal(4);
         done();
       });
-      err.on('data', data => done(data));
+      err.on('data', (data) => done(data));
       func.send('return x*x;');
     });
   });
@@ -81,7 +81,7 @@ describe('MakeFunction component', () => {
         chai.expect(data).to.equal(81);
         done();
       });
-      err.on('data', data => done(data));
+      err.on('data', (data) => done(data));
       func.send('return x*x;');
       ins.send(9);
       ins.disconnect();
@@ -93,18 +93,18 @@ describe('MakeFunction component', () => {
         chai.expect(data).to.equal('99');
         done();
       });
-      err.on('data', data => done(data));
+      err.on('data', (data) => done(data));
       ins.send('9');
       ins.disconnect();
     });
 
     it('pass function', (done) => {
-      func.send(x => `${x}!`);
+      func.send((x) => `${x}!`);
       out.on('data', (data) => {
         chai.expect(data).to.equal('hello function!');
         done();
       });
-      err.on('data', data => done(data));
+      err.on('data', (data) => done(data));
       ins.send('hello function');
       ins.disconnect();
     });
diff --git a/spec/mocha/Merge.js b/spec/mocha/Merge.js
index bb42ddc..b059d50 100644
--- a/spec/mocha/Merge.js
+++ b/spec/mocha/Merge.js
@@ -44,8 +44,8 @@ describe('Merge component', () => {
       ];
       const received = [];
       out.on('connect', () => received.push('CONN'));
-      out.on('begingroup', group => received.push(`< ${group}`));
-      out.on('data', data => received.push(`DATA ${data}`));
+      out.on('begingroup', (group) => received.push(`< ${group}`));
+      out.on('data', (data) => received.push(`DATA ${data}`));
       out.on('endgroup', () => received.push('>'));
       out.on('disconnect', () => {
         received.push('DISC');
diff --git a/spec/mocha/Output.js b/spec/mocha/Output.js
index 26602dc..8de039b 100644
--- a/spec/mocha/Output.js
+++ b/spec/mocha/Output.js
@@ -44,8 +44,8 @@ describe('Output component', () => {
       ];
       const received = [];
       out.on('connect', () => received.push('CONN'));
-      out.on('begingroup', group => received.push(`< ${group}`));
-      out.on('data', data => received.push(`DATA ${data}`));
+      out.on('begingroup', (group) => received.push(`< ${group}`));
+      out.on('data', (data) => received.push(`DATA ${data}`));
       out.on('endgroup', () => received.push('>'));
       out.on('disconnect', () => {
         received.push('DISC');
diff --git a/spec/mocha/RepeatAsync.js b/spec/mocha/RepeatAsync.js
index e9f2603..f624235 100644
--- a/spec/mocha/RepeatAsync.js
+++ b/spec/mocha/RepeatAsync.js
@@ -45,8 +45,8 @@ describe('RepeatAsync component', () => {
       ];
       const received = [];
       out.on('connect', () => received.push('CONN'));
-      out.on('begingroup', group => received.push(`< ${group}`));
-      out.on('data', data => received.push(`DATA ${data}`));
+      out.on('begingroup', (group) => received.push(`< ${group}`));
+      out.on('data', (data) => received.push(`DATA ${data}`));
       out.on('endgroup', () => received.push('>'));
       out.on('disconnect', () => {
         received.push('DISC');
diff --git a/spec/mocha/SendNext.js b/spec/mocha/SendNext.js
index b33297a..2caf4da 100644
--- a/spec/mocha/SendNext.js
+++ b/spec/mocha/SendNext.js
@@ -59,8 +59,8 @@ describe('SendNext component', () => {
       ];
 
       out.on('connect', () => received.push('CONN'));
-      out.on('begingroup', group => received.push(`< ${group}`));
-      out.on('data', d => received.push(`DATA ${d}`));
+      out.on('begingroup', (group) => received.push(`< ${group}`));
+      out.on('data', (d) => received.push(`DATA ${d}`));
       out.on('endgroup', () => received.push('>'));
       out.on('disconnect', () => received.push('DISC'));
 
diff --git a/spec/mocha/Split.js b/spec/mocha/Split.js
index 38ca8dd..23d6641 100644
--- a/spec/mocha/Split.js
+++ b/spec/mocha/Split.js
@@ -49,7 +49,7 @@ describe('Split component', () => {
     });
     it('should forward groups', (done) => {
       const groups = [];
-      out.on('begingroup', group => groups.push(group));
+      out.on('begingroup', (group) => groups.push(group));
       out.on('endgroup', () => groups.pop());
       out.on('data', (data) => {
         chai.expect(data).to.equal('foo');
@@ -85,7 +85,7 @@ describe('Split component', () => {
       const ids = ['foo', 'bar', 'baz'];
       let packets = [];
       const groups = [];
-      out.on('begingroup', group => groups.push(group));
+      out.on('begingroup', (group) => groups.push(group));
       out.on('endgroup', () => groups.pop());
       out.on('data', (data) => {
         packets.push({
@@ -95,10 +95,10 @@ describe('Split component', () => {
         if (packets.length > 2) {
           chai.expect(packets.length).to.deep.equal(3);
           ids.forEach((id) => {
-            const allData = packets.map(p => p.data);
+            const allData = packets.map((p) => p.data);
             const idGroups = packets
-              .filter(p => p.data === id)
-              .map(p => p.groups);
+              .filter((p) => p.data === id)
+              .map((p) => p.groups);
             chai.expect(allData).to.include(id);
             chai.expect(idGroups[0]).to.deep.equal([`group-of-${id}`]);
           });