diff --git a/dist/eventPage.js b/dist/eventPage.js
index e6f91470..92bf652a 100644
--- a/dist/eventPage.js
+++ b/dist/eventPage.js
@@ -6,7 +6,7 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, ge
         step((generator = generator.apply(thisArg, _arguments || [])).next());
     });
 };
-import { arrayContains } from './helper.js';
+import { arrayContains, getVersion, isVersionOlder } from './helper.js';
 import Config from './config.js';
 import Domain from './domain.js';
 ////
@@ -22,7 +22,7 @@ chrome.runtime.onInstalled.addListener(function (details) {
         // Open options page to show new features
         // chrome.runtime.openOptionsPage();
         // Run any data migrations on update
-        updateMigrations();
+        updateMigrations(details.previousVersion);
         // Display update notification
         chrome.notifications.create('extensionUpdate', {
             'type': 'basic',
@@ -98,33 +98,43 @@ function toggleDomain(domain, key) {
         Domain.domainMatch(domain, cfg[key]) ? enableDomain(cfg, domain, key) : disableDomain(cfg, domain, key);
     });
 }
-function updateMigrations() {
+// This will look at the version (from before the update) and perform data migrations if necessary
+// Only append so the order stays the same (oldest first).
+function updateMigrations(previousVersion) {
     return __awaiter(this, void 0, void 0, function* () {
-        // [1.0.16] - Downcase and trim each word in the list (NOTE: This MAY result in losing some words)
-        let cfg = yield Config.build();
-        cfg.sanitizeWords();
-        cfg.save();
-        // // [1.0.13] - updateRemoveWordsFromStorage - transition from previous words structure under the hood
-        // Note: Not async function
-        // chrome.storage.sync.get({'words': null}, function(oldWords) {
-        //   // console.log('Old words for migration:', oldWords.words);
-        //   if (oldWords.words) {
-        //     chrome.storage.sync.set({'_words0': oldWords.words}, function() {
-        //       if (!chrome.runtime.lastError) {
-        //         chrome.storage.sync.remove('words', function() {
-        //           // Split words if necessary
-        //           var wordsPromise = new Promise(function(resolve, reject) {
-        //             resolve(Config.build());
-        //           });
-        //           wordsPromise
-        //             .then(function(response: Config) {
-        //               response.save();
-        //             });
-        //         });
-        //       }
-        //     });
-        //   }
-        // });
+        let old = getVersion(previousVersion);
+        // let current = chrome.runtime.getManifest().version
+        // [1.0.13] - updateRemoveWordsFromStorage - transition from previous words structure under the hood
+        if (isVersionOlder(getVersion('1.0.13'), old)) {
+            console.log('not in herer');
+            // Note: using promise instead of async/await
+            chrome.storage.sync.get({ 'words': null }, function (oldWords) {
+                // console.log('Old words for migration:', oldWords.words);
+                if (oldWords.words) {
+                    chrome.storage.sync.set({ '_words0': oldWords.words }, function () {
+                        if (!chrome.runtime.lastError) {
+                            chrome.storage.sync.remove('words', function () {
+                                // Split words if necessary
+                                var wordsPromise = new Promise(function (resolve, reject) {
+                                    resolve(Config.build());
+                                });
+                                wordsPromise
+                                    .then(function (response) {
+                                    response.save();
+                                });
+                            });
+                        }
+                    });
+                }
+            });
+        }
+        // [1.1.0] - Downcase and trim each word in the list (NOTE: This MAY result in losing some words)
+        if (isVersionOlder(getVersion('1.1.0'), old)) {
+            console.log('in version update');
+            let cfg = yield Config.build();
+            cfg.sanitizeWords();
+            cfg.save();
+        }
     });
 }
 ////
diff --git a/dist/filter.bundle.js b/dist/filter.bundle.js
index ffdccd4e..044d617d 100644
--- a/dist/filter.bundle.js
+++ b/dist/filter.bundle.js
@@ -6,9 +6,6 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, ge
         step((generator = generator.apply(thisArg, _arguments || [])).next());
     });
 };
-////
-//src/helper.ts
-//
 function arrayContains(array, element) {
     return (array.indexOf(element) > -1);
 }
@@ -22,6 +19,28 @@ function dynamicList(list, selectEm, title) {
     }
     document.getElementById(selectEm).innerHTML = options;
 }
+// /^\d+\.\d+\.\d+$/
+function getVersion(version) {
+    let versionValues = version.split('.');
+    return {
+        major: parseInt(versionValues[0]),
+        minor: parseInt(versionValues[1]),
+        patch: parseInt(versionValues[2])
+    };
+}
+// Is the provided version lower than the minimum version?
+function isVersionOlder(minimum, version) {
+    if (version.major < minimum.major) {
+        return true;
+    }
+    else if (version.major == minimum.major && version.minor < minimum.minor) {
+        return true;
+    }
+    else if (version.major == minimum.major && version.minor == minimum.minor && version.patch < minimum.patch) {
+        return true;
+    }
+    return false;
+}
 function removeFromArray(array, element) {
     return array.filter(e => e !== element);
 }
diff --git a/dist/helper.js b/dist/helper.js
index f0544d14..22e00ff1 100644
--- a/dist/helper.js
+++ b/dist/helper.js
@@ -11,6 +11,28 @@ export function dynamicList(list, selectEm, title) {
     }
     document.getElementById(selectEm).innerHTML = options;
 }
+// /^\d+\.\d+\.\d+$/
+export function getVersion(version) {
+    let versionValues = version.split('.');
+    return {
+        major: parseInt(versionValues[0]),
+        minor: parseInt(versionValues[1]),
+        patch: parseInt(versionValues[2])
+    };
+}
+// Is the provided version lower than the minimum version?
+export function isVersionOlder(minimum, version) {
+    if (version.major < minimum.major) {
+        return true;
+    }
+    else if (version.major == minimum.major && version.minor < minimum.minor) {
+        return true;
+    }
+    else if (version.major == minimum.major && version.minor == minimum.minor && version.patch < minimum.patch) {
+        return true;
+    }
+    return false;
+}
 export function removeFromArray(array, element) {
     return array.filter(e => e !== element);
 }
diff --git a/package.js b/package.js
index 96fbf979..39f753b2 100644
--- a/package.js
+++ b/package.js
@@ -5,6 +5,7 @@ const path = require('path');
 const AdmZip = require('adm-zip');
 
 function buildChromeExtension(zip) {
+  console.log('Building ./extension-chrome.zip');
   // try { fs.unlinkSync('./dist/filter.js'); } catch {}; // Remove filter.js as its only used for testing
   zip.deleteFile('filter.js'); // Remove filter.js as its only used for testing
   zip.writeZip('./extension-chrome.zip');
@@ -12,6 +13,7 @@ function buildChromeExtension(zip) {
 
 // Firefox Extension
 function buildFirefox(manifest, zip) {
+  console.log('Building ./extension-firefox.zip');
   let firefoxManifest = {
     "applications": {
       "gecko": {
diff --git a/src/eventPage.ts b/src/eventPage.ts
index 641463d9..5168b26b 100644
--- a/src/eventPage.ts
+++ b/src/eventPage.ts
@@ -1,7 +1,13 @@
-import { arrayContains } from './helper.js';
+import { arrayContains, getVersion, isVersionOlder } from './helper.js';
 import Config from './config.js';
 import Domain from './domain.js';
 
+interface Version {
+  major: number,
+  minor: number,
+  patch: number
+}
+
 ////
 // Actions and messaging
 
@@ -17,7 +23,7 @@ chrome.runtime.onInstalled.addListener(function(details){
     // chrome.runtime.openOptionsPage();
 
     // Run any data migrations on update
-    updateMigrations();
+    updateMigrations(details.previousVersion);
 
     // Display update notification
     chrome.notifications.create('extensionUpdate', {
@@ -89,33 +95,44 @@ async function toggleDomain(domain: string, key: string) {
   Domain.domainMatch(domain, cfg[key]) ? enableDomain(cfg, domain, key) : disableDomain(cfg, domain, key);
 }
 
-async function updateMigrations() {
-  // [1.0.16] - Downcase and trim each word in the list (NOTE: This MAY result in losing some words)
-  let cfg = await Config.build();
-  cfg.sanitizeWords();
-  cfg.save();
-
-  // // [1.0.13] - updateRemoveWordsFromStorage - transition from previous words structure under the hood
-  // Note: Not async function
-  // chrome.storage.sync.get({'words': null}, function(oldWords) {
-  //   // console.log('Old words for migration:', oldWords.words);
-  //   if (oldWords.words) {
-  //     chrome.storage.sync.set({'_words0': oldWords.words}, function() {
-  //       if (!chrome.runtime.lastError) {
-  //         chrome.storage.sync.remove('words', function() {
-  //           // Split words if necessary
-  //           var wordsPromise = new Promise(function(resolve, reject) {
-  //             resolve(Config.build());
-  //           });
-  //           wordsPromise
-  //             .then(function(response: Config) {
-  //               response.save();
-  //             });
-  //         });
-  //       }
-  //     });
-  //   }
-  // });
+// This will look at the version (from before the update) and perform data migrations if necessary
+// Only append so the order stays the same (oldest first).
+async function updateMigrations(previousVersion) {
+  let old = getVersion(previousVersion) as Version;
+  // let current = chrome.runtime.getManifest().version
+
+  // [1.0.13] - updateRemoveWordsFromStorage - transition from previous words structure under the hood
+  if (isVersionOlder(getVersion('1.0.13'), old)) {
+    console.log('not in herer');
+    // Note: using promise instead of async/await
+    chrome.storage.sync.get({'words': null}, function(oldWords) {
+      // console.log('Old words for migration:', oldWords.words);
+      if (oldWords.words) {
+        chrome.storage.sync.set({'_words0': oldWords.words}, function() {
+          if (!chrome.runtime.lastError) {
+            chrome.storage.sync.remove('words', function() {
+              // Split words if necessary
+              var wordsPromise = new Promise(function(resolve, reject) {
+                resolve(Config.build());
+              });
+              wordsPromise
+                .then(function(response: Config) {
+                  response.save();
+                });
+            });
+          }
+        });
+      }
+    });
+  }
+
+  // [1.1.0] - Downcase and trim each word in the list (NOTE: This MAY result in losing some words)
+  if (isVersionOlder(getVersion('1.1.0'), old)) {
+    console.log('in version update');
+    let cfg = await Config.build();
+    cfg.sanitizeWords();
+    cfg.save();
+  }
 }
 
 ////
diff --git a/src/helper.ts b/src/helper.ts
index 4b583439..5d7b42b5 100644
--- a/src/helper.ts
+++ b/src/helper.ts
@@ -1,3 +1,9 @@
+interface Version {
+  major: number,
+  minor: number,
+  patch: number
+}
+
 export function arrayContains(array: string[], element: string) {
   return (array.indexOf(element) > -1);
 }
@@ -14,6 +20,29 @@ export function dynamicList(list, selectEm, title?: string) {
   document.getElementById(selectEm).innerHTML = options;
 }
 
+// /^\d+\.\d+\.\d+$/
+export function getVersion(version: string): Version {
+  let versionValues = version.split('.');
+  return {
+    major: parseInt(versionValues[0]),
+    minor: parseInt(versionValues[1]),
+    patch: parseInt(versionValues[2])
+  };
+}
+
+// Is the provided version lower than the minimum version?
+export function isVersionOlder(minimum: Version, version: Version): boolean {
+  if (version.major < minimum.major) {
+    return true;
+  } else if (version.major == minimum.major && version.minor < minimum.minor) {
+    return true;
+  } else if (version.major == minimum.major && version.minor == minimum.minor && version.patch < minimum.patch) {
+    return true;
+  }
+
+  return false;
+}
+
 export function removeFromArray(array: string[], element: string) {
   return array.filter(e => e !== element);
-}
+}
\ No newline at end of file
diff --git a/test/helper.spec.js b/test/helper.spec.js
index 8441f481..fd7df228 100644
--- a/test/helper.spec.js
+++ b/test/helper.spec.js
@@ -1,5 +1,5 @@
 const expect = require('chai').expect;
-import { arrayContains, dynamicContains, removeFromArray } from '../dist/helper';
+import { arrayContains, dynamicContains, getVersion, isVersionOlder, removeFromArray } from '../dist/helper';
 
 const array = ['a', 'needle', 'in', 'a', 'large', 'haystack'];
 
@@ -30,4 +30,46 @@ describe('Helper', function() {
       expect(removeFromArray(array, 'pin')).to.eql(array);
     });
   });
+
+  describe('isVersionOlder()', function() {
+    it('should return true when provided version is older than minimum', function() {
+      let minimum = getVersion('1.2.15');
+      let version = getVersion('1.1.10');
+      expect(isVersionOlder(minimum, version)).to.equal(true);
+
+      minimum = getVersion('1.2.15');
+      version = getVersion('1.1.0');
+      expect(isVersionOlder(minimum, version)).to.equal(true);
+
+      minimum = getVersion('4.6.15');
+      version = getVersion('1.4.0');
+      expect(isVersionOlder(minimum, version)).to.equal(true);
+
+      minimum = getVersion('2.3.10');
+      version = getVersion('1.5.15');
+      expect(isVersionOlder(minimum, version)).to.equal(true);
+    });
+
+    it('should return false when provided version is not older than minimum', function() {
+      let minimum = getVersion('1.2.15');
+      let version = getVersion('1.5.10');
+      expect(isVersionOlder(minimum, version)).to.equal(false);
+
+      minimum = getVersion('1.0.15');
+      version = getVersion('1.1.0');
+      expect(isVersionOlder(minimum, version)).to.equal(false);
+
+      minimum = getVersion('1.0.13');
+      version = getVersion('1.0.15');
+      expect(isVersionOlder(minimum, version)).to.equal(false);
+
+      minimum = getVersion('1.0.13');
+      version = getVersion('3.2.15');
+      expect(isVersionOlder(minimum, version)).to.equal(false);
+
+      minimum = getVersion('1.2.12');
+      version = getVersion('1.3.0');
+      expect(isVersionOlder(minimum, version)).to.equal(false);
+    });
+  });
 });
\ No newline at end of file