diff --git a/src/core/operations/Code.js b/src/core/operations/Code.js
index f7b72f5..c1df671 100755
--- a/src/core/operations/Code.js
+++ b/src/core/operations/Code.js
@@ -426,7 +426,7 @@ const Code = {
      * @returns {string}
      */
     _replaceVariableNames(input, replacer) {
-        let tokenRegex = /\\"|"(?:\\"|[^"])*"|(\b[a-z0-9\-_]+\b)/ig;
+        const tokenRegex = /\\"|"(?:\\"|[^"])*"|(\b[a-z0-9\-_]+\b)/ig;
 
         return input.replace(tokenRegex, (...args) => {
             let match = args[0],
@@ -450,7 +450,7 @@ const Code = {
      *
      */
     runToSnakeCase(input, args) {
-        let smart = args[0];
+        const smart = args[0];
 
         if (smart) {
             return Code._replaceVariableNames(input, snakeCase);
@@ -469,7 +469,7 @@ const Code = {
      *
      */
     runToCamelCase(input, args) {
-        let smart = args[0];
+        const smart = args[0];
 
         if (smart) {
             return Code._replaceVariableNames(input, camelCase);
@@ -488,7 +488,7 @@ const Code = {
      *
      */
     runToKebabCase(input, args) {
-        let smart = args[0];
+        const smart = args[0];
 
         if (smart) {
             return Code._replaceVariableNames(input, kebabCase);
diff --git a/src/core/operations/StrUtils.js b/src/core/operations/StrUtils.js
index 4203efa..1eed465 100755
--- a/src/core/operations/StrUtils.js
+++ b/src/core/operations/StrUtils.js
@@ -471,7 +471,7 @@ const StrUtils = {
             number = args[1];
 
         delimiter = Utils.charRep[delimiter];
-        let splitInput = input.split(delimiter);
+        const splitInput = input.split(delimiter);
 
         return splitInput
         .filter((line, lineIndex) => {
@@ -499,7 +499,7 @@ const StrUtils = {
             number = args[1];
 
         delimiter = Utils.charRep[delimiter];
-        let splitInput = input.split(delimiter);
+        const splitInput = input.split(delimiter);
 
         return splitInput
         .filter((line, lineIndex) => {
diff --git a/src/web/ControlsWaiter.js b/src/web/ControlsWaiter.js
index 3f22b74..1af61e7 100755
--- a/src/web/ControlsWaiter.js
+++ b/src/web/ControlsWaiter.js
@@ -244,8 +244,8 @@ ControlsWaiter.prototype.loadClick = function() {
  * Saves the recipe specified in the save textarea to local storage.
  */
 ControlsWaiter.prototype.saveButtonClick = function() {
-    let recipeName = Utils.escapeHtml(document.getElementById("save-name").value);
-    let recipeStr  = document.getElementById("save-text").value;
+    const recipeName = Utils.escapeHtml(document.getElementById("save-name").value);
+    const recipeStr  = document.getElementById("save-text").value;
 
     if (!recipeName) {
         this.app.alert("Please enter a recipe name", "danger", 2000);
diff --git a/test/TestRegister.js b/test/TestRegister.js
index 3088c8f..a66d65f 100644
--- a/test/TestRegister.js
+++ b/test/TestRegister.js
@@ -38,7 +38,7 @@ import Chef from "../src/core/Chef.js";
     TestRegister.prototype.runTests = function() {
         return Promise.all(
             this.tests.map(function(test, i) {
-                let chef = new Chef();
+                const chef = new Chef();
 
                 return Promise.resolve(chef.bake(
                     test.input,
@@ -48,7 +48,7 @@ import Chef from "../src/core/Chef.js";
                     false
                 ))
                 .then(function(result) {
-                    let ret = {
+                    const ret = {
                         test: test,
                         status: null,
                         output: null,
diff --git a/test/index.js b/test/index.js
index 2543a33..d5037a7 100644
--- a/test/index.js
+++ b/test/index.js
@@ -32,7 +32,7 @@ let allTestsPassing = true,
  * @returns {string}
  */
 function statusToIcon(status) {
-    let icons = {
+    const icons = {
         erroring: "🔥",
         failing: "❌",
         passing: "✔️️",
@@ -48,7 +48,7 @@ function statusToIcon(status) {
  */
 function handleTestResult(testResult) {
     allTestsPassing = allTestsPassing && testResult.status === "passing";
-    let newCount = (testStatusCounts[testResult.status] || 0) + 1;
+    const newCount = (testStatusCounts[testResult.status] || 0) + 1;
     testStatusCounts[testResult.status] = newCount;
     testStatusCounts.total += 1;
 
@@ -83,8 +83,8 @@ TestRegister.runTests()
 
         console.log("\n");
 
-        for (let testStatus in testStatusCounts) {
-            let count = testStatusCounts[testStatus];
+        for (const testStatus in testStatusCounts) {
+            const count = testStatusCounts[testStatus];
             if (count > 0) {
                 console.log(testStatus.toUpperCase(), count);
             }