diff --git a/package-lock.json b/package-lock.json
index 9405cc2..33850b4 100644
Binary files a/package-lock.json and b/package-lock.json differ
diff --git a/package.json b/package.json
index 968c227..b23ac16 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "fwdekker.com",
-    "version": "0.37.2",
+    "version": "0.37.3",
     "description": "The source code of [my personal website](https://fwdekker.com/).",
     "author": "Felix W. Dekker",
     "browser": "dist/bundle.js",
@@ -23,9 +23,9 @@
     },
     "devDependencies": {
         "@istanbuljs/nyc-config-typescript": "^1.0.1",
-        "@types/chai": "^4.2.11",
+        "@types/chai": "^4.2.12",
         "@types/js-cookie": "^2.2.6",
-        "@types/mocha": "^8.0.0",
+        "@types/mocha": "^8.0.1",
         "@types/semver": "^6.2.1",
         "chai": "^4.2.0",
         "grunt": "^1.2.1",
@@ -33,15 +33,15 @@
         "grunt-contrib-clean": "^2.0.0",
         "grunt-contrib-copy": "^1.0.0",
         "grunt-text-replace": "^0.4.0",
-        "grunt-webpack": "^3.1.3",
+        "grunt-webpack": "^4.0.2",
         "jsdom": "^16.3.0",
         "jsdom-global": "^3.0.2",
-        "mocha": "^8.0.1",
+        "mocha": "^8.1.1",
         "nyc": "^15.1.0",
         "ts-loader": "^8.0.1",
         "ts-node": "^8.10.2",
         "typescript": "^3.9.7",
-        "webpack": "^4.43.0",
+        "webpack": "^4.44.1",
         "webpack-cli": "^3.3.12"
     }
 }
diff --git a/src/main/js/Commands.ts b/src/main/js/Commands.ts
index e8ae708..7d2f390 100644
--- a/src/main/js/Commands.ts
+++ b/src/main/js/Commands.ts
@@ -916,10 +916,15 @@ return new Command(
 return new Command(
     (input, streams) => {
         try {
-            if (input.argc === 1)
+            if (input.argc === 0) {
+                Object.keys(josh.environment.variables)
+                    .sort()
+                    .forEach((key) => streams.out.writeLine(\`\${key} \${josh.environment.variables[key]}\`));
+            } else if (input.argc === 1) {
                 josh.environment.safeDelete(input.args[0]);
-            else
+            } else {
                 josh.environment.safeSet(input.args[0], input.args[1]);
+            }
 
             return ExitCode.OK;
         } catch (error) {
@@ -928,10 +933,13 @@ return new Command(
         }
     },
     \`set environment variable\`,
-    \`set <u>key</u> [<u>value</u>]\`,
+    \`set [<u>key</u> [<u>value</u>]]\`,
     \`Sets the environment variable <u>key</u> to <u>value</u>. If no <u>value</u> is given, the environment ${n}
-    variable is cleared. Read-only variables cannot be set.\`.trimMultiLines(),
-    new InputValidator({minArgs: 1, maxArgs: 2})
+    variable is cleared. Read-only variables cannot be set or cleared.
+
+    If neither <u>key</u> nor <u>value</u> is given, a list of all environment variables with current values is given.
+    \`.trimMultiLines(),
+    new InputValidator({minArgs: 0, maxArgs: 2})
 )`,
     "touch": /* language=JavaScript */ `\
 return new Command(