diff --git a/Directory.Build.props b/Directory.Build.props
index 1269a235..f7f9f6cd 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -1,7 +1,7 @@
 <Project>
   <PropertyGroup>
     <DevBuild Condition="'$(DevBuild)'==''">true</DevBuild>
-    <WasmtimeVersion Condition="'$(WasmtimeVersion)'==''">13.0.0</WasmtimeVersion>
+    <WasmtimeVersion Condition="'$(WasmtimeVersion)'==''">15.0.0</WasmtimeVersion>
     <WasmtimeDotnetVersion Condition="'$(WasmtimeDotnetVersion)'==''"></WasmtimeDotnetVersion>
     <WasmtimePackageVersion Condition="'$(DevBuild)'=='true'">$(WasmtimeVersion)$(WasmtimeDotnetVersion)-dev</WasmtimePackageVersion>
     <WasmtimePackageVersion Condition="'$(WasmtimePackageVersion)'==''">$(WasmtimeVersion)$(WasmtimeDotnetVersion)</WasmtimePackageVersion>
diff --git a/src/Wasmtime.csproj b/src/Wasmtime.csproj
index 46c7fe0a..706f96a6 100644
--- a/src/Wasmtime.csproj
+++ b/src/Wasmtime.csproj
@@ -20,7 +20,7 @@
     <RepositoryUrl>https://github.com/bytecodealliance/wasmtime-dotnet</RepositoryUrl>
     <PublishRepositoryUrl>true</PublishRepositoryUrl>
     <EmbedUntrackedSources>true</EmbedUntrackedSources>
-    <PackageReleaseNotes>Update Wasmtime to 13.0.0.</PackageReleaseNotes>
+    <PackageReleaseNotes>Update Wasmtime to 15.0.0.</PackageReleaseNotes>
     <Summary>A .NET API for Wasmtime, a standalone WebAssembly runtime</Summary>
     <PackageTags>webassembly, .net, wasm, wasmtime</PackageTags>
     <Title>Wasmtime</Title>