diff --git a/src/AspNetCoreRateLimit.Redis/AspNetCoreRateLimit.Redis.csproj b/src/AspNetCoreRateLimit.Redis/AspNetCoreRateLimit.Redis.csproj
index 6d2b4a99..73195eb2 100644
--- a/src/AspNetCoreRateLimit.Redis/AspNetCoreRateLimit.Redis.csproj
+++ b/src/AspNetCoreRateLimit.Redis/AspNetCoreRateLimit.Redis.csproj
@@ -26,7 +26,7 @@
   </ItemGroup>
 
   <ItemGroup Condition="'$(Configuration)' == 'Release'">
-    <PackageReference Include="AspNetCoreRateLimit" Version="4.0.1" />
+    <PackageReference Include="AspNetCoreRateLimit" Version="4.0.2" />
   </ItemGroup>
   
   <ItemGroup Condition="'$(Configuration)' == 'Debug' or '$(APPVEYOR)' == 'true'">
diff --git a/src/AspNetCoreRateLimit/Core/Extensions.cs b/src/AspNetCoreRateLimit/Core/Extensions.cs
index 160fb8c6..2b2be06b 100644
--- a/src/AspNetCoreRateLimit/Core/Extensions.cs
+++ b/src/AspNetCoreRateLimit/Core/Extensions.cs
@@ -27,7 +27,7 @@ public static bool IsRegexMatch(this string source, string value)
             }
             // if the regex is e.g. /api/values/ the path should be an exact match
             // if all paths below this should be included the regex should be /api/values/*
-            if (value[^1] != '$')
+            if (value[value.Length - 1] != '$')
             {
                 value += '$';
             }