diff --git a/installer.iss b/installer.iss
index 3b53620..2bc5df1 100644
--- a/installer.iss
+++ b/installer.iss
@@ -2,7 +2,7 @@
 ; SEE THE DOCUMENTATION FOR DETAILS ON CREATING INNO SETUP SCRIPT FILES!
 
 #define MyAppName "WinDynamicDesktop"
-#define MyAppVersion "1.2"
+#define MyAppVersion "1.2.1"
 #define MyAppPublisher "Timothy Johnson"
 #define MyAppURL "https://github.com/t1m0thyj/WinDynamicDesktop"
 #define MyAppExeName "WinDynamicDesktop.exe"
diff --git a/src/Properties/AssemblyInfo.cs b/src/Properties/AssemblyInfo.cs
index 7b47126..a84daba 100644
--- a/src/Properties/AssemblyInfo.cs
+++ b/src/Properties/AssemblyInfo.cs
@@ -32,5 +32,5 @@
 // You can specify all the values or you can default the Build and Revision Numbers
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("1.2.0")]
+[assembly: AssemblyVersion("1.2.1")]
 //[assembly: AssemblyFileVersion("1.0.0.0")]
diff --git a/src/SunriseSunset.cs b/src/SunriseSunset.cs
index 1346e91..c35c789 100644
--- a/src/SunriseSunset.cs
+++ b/src/SunriseSunset.cs
@@ -3,6 +3,7 @@
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using System.Globalization;
 using Innovative.SolarCalculator;
 
 namespace WinDynamicDesktop
@@ -15,11 +16,13 @@ public class WeatherData
 
     class SunriseSunsetService
     {
+        private static CultureInfo cultureInfo = CultureInfo.GetCultureInfo("en-US");
+
         public static WeatherData GetWeatherData(string lat, string lon, string dateStr)
         {
             DateTime date = DateTime.Parse(dateStr);
-            double latitude = Double.Parse(lat);
-            double longitude = Double.Parse(lon);
+            double latitude = Double.Parse(lat, cultureInfo);
+            double longitude = Double.Parse(lon, cultureInfo);
 
             SolarTimes solarTimes = new SolarTimes(date, latitude, longitude);