diff --git a/package.json b/package.json
index e9c953104..049d989ab 100644
--- a/package.json
+++ b/package.json
@@ -40,7 +40,7 @@
     "@placemarkio/tokml": "0.3.4",
     "@tmcw/togeojson": "^5.8.0",
     "colorbrewer": "1.5.7",
-    "csv2geojson": "5.1.2",
+    "csv2geojson": "github:umap-project/csv2geojson#patched",
     "dompurify": "3.1.7",
     "georsstogeojson": "^0.2.0",
     "jsdom": "^24.0.0",
diff --git a/umap/static/umap/js/modules/formatter.js b/umap/static/umap/js/modules/formatter.js
index c641da2f2..6a03b6b5e 100644
--- a/umap/static/umap/js/modules/formatter.js
+++ b/umap/static/umap/js/modules/formatter.js
@@ -81,6 +81,8 @@ export class Formatter {
       {
         delimiter: 'auto',
         includeLatLon: false,
+        sexagesimal: false,
+        parseLatLon: (raw) => Number.parseFloat(raw.toString().replace(',', '.')),
       },
       (err, result) => {
         // csv2geojson fallback to null geometries when it cannot determine
@@ -115,7 +117,9 @@ export class Formatter {
   }
 
   async fromGeoRSS(str) {
-    const GeoRSSToGeoJSON = await import('../../vendors/georsstogeojson/GeoRSSToGeoJSON.js')
+    const GeoRSSToGeoJSON = await import(
+      '../../vendors/georsstogeojson/GeoRSSToGeoJSON.js'
+    )
     return GeoRSSToGeoJSON.parse(this.toDom(str))
   }
 
diff --git a/umap/static/umap/vendors/csv2geojson/csv2geojson.js b/umap/static/umap/vendors/csv2geojson/csv2geojson.js
index 09a73e5ff..260312f52 100644
--- a/umap/static/umap/vendors/csv2geojson/csv2geojson.js
+++ b/umap/static/umap/vendors/csv2geojson/csv2geojson.js
@@ -81,6 +81,8 @@ function csv2geojson(x, options, callback) {
     }
 
     options.delimiter = options.delimiter || ',';
+    options.parseLatLon = options.parseLatLon || parseFloat;
+    options.sexagesimal = options.sexagesimal !== false;
 
     var latfield = options.latfield || '',
         lonfield = options.lonfield || '',
@@ -129,6 +131,7 @@ function csv2geojson(x, options, callback) {
 
     if (!latfield) latfield = guessLatHeader(parsed[0]);
     if (!lonfield) lonfield = guessLonHeader(parsed[0]);
+
     var noGeometry = (!latfield || !lonfield);
 
     if (noGeometry) {
@@ -152,13 +155,15 @@ function csv2geojson(x, options, callback) {
                 lonf, latf,
                 a;
 
-            a = sexagesimal(lonk, 'EW');
-            if (a) lonk = a;
-            a = sexagesimal(latk, 'NS');
-            if (a) latk = a;
+            if (options.sexagesimal) {
+                a = sexagesimal(lonk, 'EW');
+                if (a) lonk = a;
+                a = sexagesimal(latk, 'NS');
+                if (a) latk = a;
+            }
 
-            lonf = parseFloat(lonk);
-            latf = parseFloat(latk);
+            lonf = options.parseLatLon(lonk);
+            latf = options.parseLatLon(latk);
 
             if (isNaN(lonf) ||
                 isNaN(latf)) {
@@ -179,8 +184,8 @@ function csv2geojson(x, options, callback) {
                     geometry: {
                         type: 'Point',
                         coordinates: [
-                            parseFloat(lonf),
-                            parseFloat(latf)
+                            lonf,
+                            latf
                         ]
                     }
                 });
diff --git a/umap/tests/integration/test_import.py b/umap/tests/integration/test_import.py
index 4752eee72..67460f0a0 100644
--- a/umap/tests/integration/test_import.py
+++ b/umap/tests/integration/test_import.py
@@ -494,6 +494,39 @@ def test_import_csv_without_valid_latlon_headers(tilelayer, live_server, page):
     expect(page.locator('umap-alert div[data-level="error"]')).to_be_visible()
 
 
+def test_import_csv_with_commas_in_latlon(tilelayer, live_server, page, settings):
+    settings.UMAP_ALLOW_ANONYMOUS = True
+    page.goto(f"{live_server.url}/map/new/")
+    page.get_by_title("Open browser").click()
+    layers = page.locator(".umap-browser .datalayer")
+    markers = page.locator(".leaflet-marker-icon")
+    page.get_by_title("Import data").click()
+    textarea = page.locator(".umap-upload textarea")
+    textarea.fill("lat;lon;foobar\n12,24;48,34;mypoint\n12,23;48,35;mypoint2")
+    page.locator('select[name="format"]').select_option("csv")
+    page.get_by_role("button", name="Import data", exact=True).click()
+    expect(layers).to_have_count(1)
+    expect(markers).to_have_count(2)
+    with page.expect_response(re.compile(r".*/datalayer/create/.*")):
+        page.get_by_role("button", name="Save").click()
+    datalayer = DataLayer.objects.last()
+    saved_data = json.loads(Path(datalayer.geojson.path).read_text())
+    assert saved_data["features"][0]["geometry"] == {
+        "coordinates": [
+            48.35,
+            12.23,
+        ],
+        "type": "Point",
+    }
+    assert saved_data["features"][1]["geometry"] == {
+        "coordinates": [
+            48.34,
+            12.24,
+        ],
+        "type": "Point",
+    }
+
+
 def test_create_remote_data(page, live_server, tilelayer):
     def handle(route):
         route.fulfill(