diff --git a/.travis.yml b/.travis.yml
index dd338dd..f4ae934 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,6 @@
 language: node_js
 node_js:
-  - "4"
-  - "6"
-  - "8"
+  - "12"
+  - "14"
+  - "16"
+  - node
diff --git a/package.json b/package.json
index 49f9d4b..059137a 100644
--- a/package.json
+++ b/package.json
@@ -23,18 +23,18 @@
   "license": "MIT",
   "engine": "node",
   "dependencies": {
-    "async": "~2.1.4",
-    "cli-table": "^0.3.1",
-    "commander": "~2.9.0",
-    "readdirp": "^2.1.0"
+    "async": "^3.2.1",
+    "cli-table": "^0.3.6",
+    "commander": "^8.2.0",
+    "readdirp": "^2.2.1"
   },
   "devDependencies": {
-    "chai": "~3.5.0",
-    "coffee-script": "~1.12.3",
-    "coffeelint": "^1.16.0",
-    "coveralls": "^2.11.15",
+    "chai": "^4.3.4",
+    "coffeescript": "^2.6.1",
+    "coffeelint": "^2.1.0",
+    "coveralls": "^3.1.1",
     "istanbul": "^0.4.5",
-    "mocha": "~3.2.0"
+    "mocha": "^9.1.3"
   },
   "repository": {
     "type": "git",
@@ -55,6 +55,6 @@
     "lint": "coffeelint src/",
     "watch": "coffee -o lib -cw src/",
     "prepublish": "coffee -o lib/ -c src/",
-    "test": "npm run lint && mocha --reporter spec --compilers coffee:coffee-script/register --recursive spec/*.spec.coffee"
+    "test": "npm run lint && mocha --require coffeescript/register --recursive spec/*.spec.coffee"
   }
 }
diff --git a/src/sloc.coffee b/src/sloc.coffee
index b1283c9..3c23ff7 100644
--- a/src/sloc.coffee
+++ b/src/sloc.coffee
@@ -29,7 +29,8 @@ getCommentExpressions = (lang) ->
 
       when "coffee", "iced"
         /\#[^\{]/ # hashtag not followed by opening curly brace
-      when "cr", "py", "ls", "mochi", "nix", "r", "rb", "jl", "pl", "yaml", "hr", "rpy"
+      when "cr", "py", "ls", "mochi", "nix", "r", \
+           "rb", "jl", "pl", "yaml", "hr", "rpy"
         /\#/
       when "js", "jsx", "mjs", "c", "cc", "cpp", "cs", "cxx", "h", "m", "mm", \
            "hpp", "hx", "hxx", "ino", "java", "php", "php5", "go", "groovy", \