diff --git a/src/GitReleaseManager.Core/ReleaseNotes/ReleaseNotesBuilder.cs b/src/GitReleaseManager.Core/ReleaseNotes/ReleaseNotesBuilder.cs
index b2cc564d..1ee2b426 100644
--- a/src/GitReleaseManager.Core/ReleaseNotes/ReleaseNotesBuilder.cs
+++ b/src/GitReleaseManager.Core/ReleaseNotes/ReleaseNotesBuilder.cs
@@ -60,7 +60,7 @@ public async Task<string> BuildReleaseNotesAsync(string user, string repository,
 
             if (issues.Count == 0)
             {
-                var logMessage = string.Format("No closed issues have been found for milestone {0}, or all assigned issues are meant to be excluded from release notes, aborting creation of release.", _milestoneTitle);
+                var logMessage = string.Format(CultureInfo.InvariantCulture, "No closed issues have been found for milestone {0}, or all assigned issues are meant to be excluded from release notes, aborting creation of release.", _milestoneTitle);
                 throw new InvalidOperationException(logMessage);
             }
 
diff --git a/src/GitReleaseManager.Core/VcsService.cs b/src/GitReleaseManager.Core/VcsService.cs
index 2a5f88a7..c98ec420 100644
--- a/src/GitReleaseManager.Core/VcsService.cs
+++ b/src/GitReleaseManager.Core/VcsService.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Globalization;
 using System.IO;
 using System.Linq;
 using System.Security.Cryptography;
@@ -141,7 +142,7 @@ private async Task AddAssetsAsync(string owner, string repository, string tagNam
                     {
                         if (!File.Exists(asset))
                         {
-                            var message = string.Format("Requested asset to be uploaded doesn't exist: {0}", asset);
+                            var message = string.Format(CultureInfo.InvariantCulture, "Requested asset to be uploaded doesn't exist: {0}", asset);
                             throw new FileNotFoundException(message);
                         }
 
@@ -185,7 +186,7 @@ private async Task AddAssetsAsync(string owner, string repository, string tagNam
                         if (!release.Body.Contains(_configuration.Create.ShaSectionHeading))
                         {
                             _logger.Debug("Creating SHA section header");
-                            stringBuilder.AppendLine(string.Format("### {0}", _configuration.Create.ShaSectionHeading));
+                            stringBuilder.AppendLine(string.Format(CultureInfo.InvariantCulture, "### {0}", _configuration.Create.ShaSectionHeading));
                         }
 
                         foreach (var asset in assets)
@@ -199,7 +200,7 @@ private async Task AddAssetsAsync(string owner, string repository, string tagNam
 
                             _logger.Debug("Creating SHA checksum for {Name}.", file.Name);
 
-                            stringBuilder.AppendFormat(_configuration.Create.ShaSectionLineFormat, file.Name, ComputeSha256Hash(asset));
+                            stringBuilder.AppendFormat(CultureInfo.InvariantCulture, _configuration.Create.ShaSectionLineFormat, file.Name, ComputeSha256Hash(asset));
                             stringBuilder.AppendLine();
                         }