diff --git a/Directory.Packages.props b/Directory.Packages.props
index 42b6a60..373766f 100644
--- a/Directory.Packages.props
+++ b/Directory.Packages.props
@@ -6,7 +6,7 @@
     <!-- Test packages: CodeCoverage and TrxReport versions are supplied by MSTest.Sdk;
          do not pin them here or CPM reports duplicate PackageVersion items (NU1506). -->
     <!-- Semantics runtime packages -->
-    <PackageVersion Include="Polyfill" Version="11.3.0" />
+    <PackageVersion Include="Polyfill" Version="11.4.0" />
     <!-- Test-only: Semantics ships no JSON converter, so the tests register this factory the
          same way a consumer is expected to. Not referenced by any shipping project. -->
     <PackageVersion Include="ktsu.RoundTripStringJsonConverter" Version="1.0.60" />