diff --git a/Directory.Build.props b/Directory.Build.props
index 14058716..093d642b 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -21,7 +21,7 @@
 
     <ForkPackageBuild Condition="'$(ForkPreview)' == 'true' OR '$(ForkRelease)' == 'true'">true</ForkPackageBuild>
     <ForkPackagePrefix Condition="'$(ForkPackageBuild)' == 'true' AND '$(ForkPackagePrefix)' == ''">Skuirrels.</ForkPackagePrefix>
-    <DuckDbNativeVersion Condition="'$(DuckDbNativeVersion)' == ''">1.5.5</DuckDbNativeVersion>
+    <DuckDbNativeVersion Condition="'$(DuckDbNativeVersion)' == ''">1.5.6</DuckDbNativeVersion>
     <Product>DuckDB.NET.$(MSBuildProjectName)</Product>
     <PackageId>$(ForkPackagePrefix)DuckDB.NET.$(MSBuildProjectName)</PackageId>
     <PackageTags>DuckDB;ADO.NET;Database;Olap;Embedded</PackageTags>
diff --git a/DuckDB.NET.Benchmarks/PreparedCommandWorkload.cs b/DuckDB.NET.Benchmarks/PreparedCommandWorkload.cs
index 1c7aaa1e..59099124 100644
--- a/DuckDB.NET.Benchmarks/PreparedCommandWorkload.cs
+++ b/DuckDB.NET.Benchmarks/PreparedCommandWorkload.cs
@@ -9,7 +9,7 @@ internal static class PreparedCommandWorkload
 #if DUCKDB_NET_BASELINE_1_5_3
     private const string ExpectedEngineVersion = "v1.5.3";
 #else
-    private const string ExpectedEngineVersion = "v1.5.5";
+    private const string ExpectedEngineVersion = "v1.5.6";
 #endif
 
     public static DuckDBConnection OpenVerifiedConnection()
diff --git a/README-FORK.md b/README-FORK.md
index c4f1e67a..2bbd8f47 100644
--- a/README-FORK.md
+++ b/README-FORK.md
@@ -2,13 +2,13 @@
 
 This is an unofficial stable build from the
 [`skuirrels/DuckDB.NET`](https://github.com/skuirrels/DuckDB.NET) fork. It
-packages the consolidated performance work for DuckDB v1.5.5 under distinct
+packages the consolidated performance work for DuckDB v1.5.6 under distinct
 `Skuirrels.DuckDB.NET.*` package IDs.
 
 Install the bundled provider explicitly:
 
 ```shell
-dotnet add package Skuirrels.DuckDB.NET.Data.Full --version 1.5.5.2
+dotnet add package Skuirrels.DuckDB.NET.Data.Full --version 1.5.6
 ```
 
 NuGet packages:
@@ -21,7 +21,7 @@ so application source code does not need to change. Do not reference this fork
 package and the official `DuckDB.NET.Data.Full` package in the same dependency
 graph because they contain assemblies with the same identities.
 
-This release bundles DuckDB v1.5.5 and includes the consolidated appender,
+This release bundles DuckDB v1.5.6 and includes the consolidated appender,
 parameter binding, prepared-command, result materialisation, and scoped-writer
 optimisations from the fork. When equivalent upstream changes are released,
 move back to the official `DuckDB.NET.Data.Full` package.
diff --git a/README.md b/README.md
index aec80431..4c641303 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,7 @@ the corresponding upstream pull requests are reviewed and released.
 ## Usage
 
 ```sh
-dotnet add package Skuirrels.DuckDB.NET.Data.Full --version 1.5.5.2
+dotnet add package Skuirrels.DuckDB.NET.Data.Full --version 1.5.6
 ```
 
 The fork packages retain the official `DuckDB.NET.Data` namespaces and assembly
diff --git a/scripts/validate-fork-packages.sh b/scripts/validate-fork-packages.sh
index 019f8afb..0afabf00 100755
--- a/scripts/validate-fork-packages.sh
+++ b/scripts/validate-fork-packages.sh
@@ -109,7 +109,7 @@ using (var appender = connection.CreateAppender("fork_package_smoke"))
 using var verification = connection.CreateCommand();
 verification.CommandText = "SELECT version(), sum(value) FROM fork_package_smoke";
 using var reader = verification.ExecuteReader();
-if (!reader.Read() || !reader.GetString(0).Contains("v1.5.5", StringComparison.Ordinal) || reader.GetInt64(1) != 42)
+if (!reader.Read() || !reader.GetString(0).Contains("v1.5.6", StringComparison.Ordinal) || reader.GetInt64(1) != 42)
 {
     throw new InvalidOperationException("Fork package smoke test failed.");
 }