diff --git a/modules/dynamic/auto-update.js b/modules/dynamic/auto-update.js
index 2363a355..77b2f5ae 100644
--- a/modules/dynamic/auto-update.js
+++ b/modules/dynamic/auto-update.js
@@ -1,8 +1,10 @@
 "use strict";
 
 // update old map file to the current version
-export function resolveVersionConflicts(version) {
-  if (version < 1) {
+export function resolveVersionConflicts(mapVersion) {
+  const isOlderThan = tagVersion => compareVersions(mapVersion, tagVersion).isOlder;
+
+  if (isOlderThan("1.0.0")) {
     // v1.0 added a new religions layer
     relig = viewbox.insert("g", "#terrain").attr("id", "relig");
     Religions.generate();
@@ -107,11 +109,11 @@ export function resolveVersionConflicts(version) {
     biomesData.habitability.push(12);
   }
 
-  if (version < 1.1) {
-    // v1.0 initial code had a bug with religion layer id
+  if (isOlderThan("1.1.0")) {
+    // v1.0 code had a bug with religion layer id
     if (!relig.size()) relig = viewbox.insert("g", "#terrain").attr("id", "relig");
 
-    // v1.0 initially has Sympathy status then relaced with Friendly
+    // v1.0 had Sympathy status then relaced with Friendly
     for (const s of pack.states) {
       if (!s.diplomacy) continue;
       s.diplomacy = s.diplomacy.map(r => (r === "Sympathy" ? "Friendly" : r));
@@ -203,7 +205,7 @@ export function resolveVersionConflicts(version) {
     drawCoastline();
   }
 
-  if (version < 1.11) {
+  if (isOlderThan("1.11.0")) {
     // v1.11 added new attributes
     terrs.attr("scheme", "bright").attr("terracing", 0).attr("skip", 5).attr("relax", 0).attr("curve", 0);
     svg.select("#oceanic > *").attr("id", "oceanicPattern");
@@ -229,7 +231,7 @@ export function resolveVersionConflicts(version) {
     if (!terrain.attr("density")) terrain.attr("density", 0.4);
   }
 
-  if (version < 1.21) {
+  if (isOlderThan("1.21.0")) {
     // v1.11 replaced "display" attribute by "display" style
     viewbox.selectAll("g").each(function () {
       if (this.hasAttribute("display")) {
@@ -255,12 +257,12 @@ export function resolveVersionConflicts(version) {
     });
   }
 
-  if (version < 1.22) {
+  if (isOlderThan("1.22.0")) {
     // v1.22 changed state neighbors from Set object to array
     BurgsAndStates.collectStatistics();
   }
 
-  if (version < 1.3) {
+  if (isOlderThan("1.3.0")) {
     // v1.3 added global options object
     const winds = options.slice(); // previostly wind was saved in settings[19]
     const year = rand(100, 2000);
@@ -285,7 +287,7 @@ export function resolveVersionConflicts(version) {
     Military.generate();
   }
 
-  if (version < 1.4) {
+  if (isOlderThan("1.4.0")) {
     // v1.35 added dry lakes
     if (!lakes.select("#dry").size()) {
       lakes.append("g").attr("id", "dry");
@@ -329,7 +331,7 @@ export function resolveVersionConflicts(version) {
     pack.states.filter(s => s.military).forEach(s => s.military.forEach(r => (r.state = s.i)));
   }
 
-  if (version < 1.5) {
+  if (isOlderThan("1.5.0")) {
     // not need to store default styles from v 1.5
     localStorage.removeItem("styleClean");
     localStorage.removeItem("styleGloom");
@@ -367,7 +369,7 @@ export function resolveVersionConflicts(version) {
     });
   }
 
-  if (version < 1.6) {
+  if (isOlderThan("1.6.0")) {
     // v1.6 changed rivers data
     for (const river of pack.rivers) {
       const el = document.getElementById("river" + river.i);
@@ -399,7 +401,7 @@ export function resolveVersionConflicts(version) {
     }
   }
 
-  if (version < 1.61) {
+  if (isOlderThan("1.61.0")) {
     // v1.61 changed rulers data
     ruler.style("display", null);
     rulers = new Rulers();
@@ -453,12 +455,12 @@ export function resolveVersionConflicts(version) {
     pattern.innerHTML = /* html */ `<image id="oceanicPattern" href=${href} width="100" height="100" opacity="0.2"></image>`;
   }
 
-  if (version < 1.62) {
+  if (isOlderThan("1.62.0")) {
     // v1.62 changed grid data
     gridOverlay.attr("size", null);
   }
 
-  if (version < 1.63) {
+  if (isOlderThan("1.63.0")) {
     // v1.63 changed ocean pattern opacity element
     const oceanPattern = document.getElementById("oceanPattern");
     if (oceanPattern) oceanPattern.removeAttribute("opacity");
@@ -472,7 +474,7 @@ export function resolveVersionConflicts(version) {
     labels.select("#addedLabels").style("text-shadow", "white 0 0 4px");
   }
 
-  if (version < 1.64) {
+  if (isOlderThan("1.64.0")) {
     // v1.64 change states style
     const opacity = regions.attr("opacity");
     const filter = regions.attr("filter");
@@ -481,7 +483,7 @@ export function resolveVersionConflicts(version) {
     regions.attr("opacity", null).attr("filter", null);
   }
 
-  if (version < 1.65) {
+  if (isOlderThan("1.65.0")) {
     // v1.65 changed rivers data
     d3.select("#rivers").attr("style", null); // remove style to unhide layer
     const {cells, rivers} = pack;
@@ -523,13 +525,13 @@ export function resolveVersionConflicts(version) {
     }
   }
 
-  if (version < 1.652) {
+  if (isOlderThan("1.652.0")) {
     // remove style to unhide layers
     rivers.attr("style", null);
     borders.attr("style", null);
   }
 
-  if (version < 1.7) {
+  if (isOlderThan("1.7.0")) {
     // v1.7 changed markers data
     const defs = document.getElementById("defs-markers");
     const markersGroup = document.getElementById("markers");
@@ -587,7 +589,7 @@ export function resolveVersionConflicts(version) {
     }
   }
 
-  if (version < 1.72) {
+  if (isOlderThan("1.72.0")) {
     // v1.72 renamed custom style presets
     const storedStyles = Object.keys(localStorage).filter(key => key.startsWith("style"));
     storedStyles.forEach(styleName => {
@@ -598,7 +600,7 @@ export function resolveVersionConflicts(version) {
     });
   }
 
-  if (version < 1.73) {
+  if (isOlderThan("1.73.0")) {
     // v1.73 moved the hatching patterns out of the user's SVG
     document.getElementById("hatching")?.remove();
 
@@ -609,17 +611,17 @@ export function resolveVersionConflicts(version) {
     });
   }
 
-  if (version < 1.84) {
+  if (isOlderThan("1.84.0")) {
     // v1.84.0 added grid.cellsDesired to stored data
     if (!grid.cellsDesired) grid.cellsDesired = rn((graphWidth * graphHeight) / grid.spacing ** 2, -3);
   }
 
-  if (version < 1.85) {
+  if (isOlderThan("1.85.0")) {
     // v1.84.0 moved intial screen out of maon svg
     svg.select("#initial").remove();
   }
 
-  if (version < 1.86) {
+  if (isOlderThan("1.86.0")) {
     // v1.86.0 added multi-origin culture and religion hierarchy trees
     for (const culture of pack.cultures) {
       culture.origins = [culture.origin];
@@ -632,14 +634,14 @@ export function resolveVersionConflicts(version) {
     }
   }
 
-  if (version < 1.88) {
+  if (isOlderThan("1.88.0")) {
     // v1.87 may have incorrect shield for some reason
     pack.states.forEach(({coa}) => {
       if (coa?.shield === "state") delete coa.shield;
     });
   }
 
-  if (version < 1.91) {
+  if (isOlderThan("1.91.0")) {
     // from 1.91.00 custom coa is moved to coa object
     pack.states.forEach(state => {
       if (state.coa === "custom") state.coa = {custom: true};
@@ -688,14 +690,14 @@ export function resolveVersionConflicts(version) {
     });
   }
 
-  if (version < 1.92) {
+  if (isOlderThan("1.92.0")) {
     // v1.92 change labels text-anchor from 'start' to 'middle'
     labels.selectAll("tspan").each(function () {
       this.setAttribute("x", 0);
     });
   }
 
-  if (version < 1.94) {
+  if (isOlderThan("1.94.0")) {
     // from v1.94.00 texture image is removed when layer is off
     texture.style("display", null);
 
@@ -713,7 +715,7 @@ export function resolveVersionConflicts(version) {
     }
   }
 
-  if (version < 1.95) {
+  if (isOlderThan("1.95.0")) {
     // v1.95.00 added vignette visual layer
     const mask = defs.append("mask").attr("id", "vignette-mask");
     mask.append("rect").attr("fill", "white").attr("x", 0).attr("y", 0).attr("width", "100%").attr("height", "100%");
@@ -739,7 +741,7 @@ export function resolveVersionConflicts(version) {
     vignette.append("rect").attr("x", 0).attr("y", 0).attr("width", "100%").attr("height", "100%");
   }
 
-  if (version < 1.96) {
+  if (isOlderThan("1.96.0")) {
     // v1.96 added ocean rendering for heightmap
     terrs.selectAll("*").remove();
 
@@ -833,7 +835,7 @@ export function resolveVersionConflicts(version) {
     });
   }
 
-  if (version < 1.97) {
+  if (isOlderThan("1.97.0")) {
     // v1.97.00 changed MFCG link to an arbitrary preview URL
     options.villageMaxPopulation = 2000;
     options.showBurgPreview = options.showMFCGMap;
@@ -849,7 +851,7 @@ export function resolveVersionConflicts(version) {
     });
   }
 
-  if (version < 1.98) {
+  if (isOlderThan("1.98.0")) {
     // v1.98.00 changed compass layer and rose element id
     const rose = compass.select("use");
     rose.attr("xlink:href", "#defs-compass-rose");
@@ -861,7 +863,7 @@ export function resolveVersionConflicts(version) {
     }
   }
 
-  if (version < 1.99) {
+  if (isOlderThan("1.99.0")) {
     // v1.99.00 changed routes generation algorithm and data format
     routes.attr("display", null).attr("style", null);
 
diff --git a/modules/io/load.js b/modules/io/load.js
index 05932065..2c9633ed 100644
--- a/modules/io/load.js
+++ b/modules/io/load.js
@@ -114,7 +114,7 @@ function uploadMap(file, callback) {
 
     const isInvalid = !mapData || !isValidVersion(mapVersion) || mapData.length < 26 || !mapData[5];
     const isUpdated = compareVersions(mapVersion, version).isEqual;
-    const isAncient = compareVersions(mapVersion, "0.7.00").isOlder;
+    const isAncient = compareVersions(mapVersion, "0.7.0").isOlder;
     const isNewer = compareVersions(mapVersion, version).isNewer;
     const isOutdated = compareVersions(mapVersion, version).isOlder;
 
@@ -128,23 +128,6 @@ function uploadMap(file, callback) {
   fileReader.readAsArrayBuffer(file);
 }
 
-function isValidVersion(versionString) {
-  if (!versionString) return false;
-  const [major, minor, patch] = versionString.split(".");
-  return !isNaN(major) && !isNaN(minor) && !isNaN(patch);
-}
-
-function compareVersions(version1, version2) {
-  const [major1, minor1, patch1] = version1.split(".");
-  const [major2, minor2, patch2] = version2.split(".");
-
-  const isEqual = major1 === major2 && minor1 === minor2 && patch1 === patch2;
-  const isNewer = major1 > major2 || (major1 === major2 && (minor1 > minor2 || (minor1 === minor2 && patch1 > patch2)));
-  const isOlder = major1 < major2 || (major1 === major2 && (minor1 < minor2 || (minor1 === minor2 && patch1 < patch2)));
-
-  return {isEqual, isNewer, isOlder};
-}
-
 async function uncompress(compressedData) {
   try {
     const uncompressedStream = new Blob([compressedData]).stream().pipeThrough(new DecompressionStream("gzip"));
@@ -198,7 +181,7 @@ function showUploadMessage(type, mapData, mapVersion) {
     message = `The map version you are trying to load (${mapVersion}) is newer than the current version.<br>Please load the file in the appropriate version`;
     title = "Newer file";
   } else if (type === "outdated") {
-    INFO && console.info(`Loading map. Auto-update from ${mapVersion} to ${version}`);
+    INFO && console.info(`Loading map. Auto-updating from ${mapVersion} to ${version}`);
     parseLoadedData(mapData, mapVersion);
     return;
   }
@@ -478,9 +461,8 @@ async function parseLoadedData(data, mapVersion) {
 
     {
       // dynamically import and run auto-update script
-      const versionNumber = parseFloat(params[0]);
-      const {resolveVersionConflicts} = await import("../dynamic/auto-update.js?v=1.99.01");
-      resolveVersionConflicts(versionNumber);
+      const {resolveVersionConflicts} = await import("../dynamic/auto-update.js?v=1.100.00");
+      resolveVersionConflicts(mapVersion);
     }
 
     // add custom heightmap color scheme if any
diff --git a/versioning.js b/versioning.js
index 8de40547..266dff0a 100644
--- a/versioning.js
+++ b/versioning.js
@@ -9,7 +9,7 @@ const version = "1.100.00"; // generator version, update each time
   if (loadingScreenVersion) loadingScreenVersion.innerText = `v${version}`;
 
   const storedVersion = localStorage.getItem("version");
-  if (isOutdated(storedVersion)) {
+  if (compareVersions(storedVersion, version).isOlder) {
     await clearCache();
     setTimeout(showUpdateWindow, 6000);
   }
@@ -82,3 +82,22 @@ const version = "1.100.00"; // generator version, update each time
     return Promise.all(cacheNames.map(cacheName => caches.delete(cacheName)));
   }
 }
+
+function isValidVersion(versionString) {
+  if (!versionString) return false;
+  const [major, minor, patch] = versionString.split(".");
+  return !isNaN(major) && !isNaN(minor) && !isNaN(patch);
+}
+
+function compareVersions(version1, version2) {
+  if (!isValidVersion(version1) || !isValidVersion(version2)) return {isEqual: false, isNewer: false, isOlder: false};
+
+  const [major1, minor1, patch1] = version1.split(".").map(Number);
+  const [major2, minor2, patch2] = version2.split(".").map(Number);
+
+  const isEqual = major1 === major2 && minor1 === minor2 && patch1 === patch2;
+  const isNewer = major1 > major2 || (major1 === major2 && (minor1 > minor2 || (minor1 === minor2 && patch1 > patch2)));
+  const isOlder = major1 < major2 || (major1 === major2 && (minor1 < minor2 || (minor1 === minor2 && patch1 < patch2)));
+
+  return {isEqual, isNewer, isOlder};
+}