diff --git a/src/OpenFeature.Contrib.Providers.Flagsmith/OpenFeature.Contrib.Providers.Flagsmith.csproj b/src/OpenFeature.Contrib.Providers.Flagsmith/OpenFeature.Contrib.Providers.Flagsmith.csproj
index 7a1f1134..978c94e5 100644
--- a/src/OpenFeature.Contrib.Providers.Flagsmith/OpenFeature.Contrib.Providers.Flagsmith.csproj
+++ b/src/OpenFeature.Contrib.Providers.Flagsmith/OpenFeature.Contrib.Providers.Flagsmith.csproj
@@ -18,7 +18,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Flagsmith" Version="5.3.2" />
+    <PackageReference Include="Flagsmith" Version="5.4.3" />
   </ItemGroup>
 
   <ItemGroup Condition=" '$(TargetFramework)' == 'net462' or '$(TargetFramework)' == 'netstandard2.0' or '$(TargetFramework)' == 'net5.0'">