diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index aee3879b..0fec246c 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -2,7 +2,7 @@
   "pkgs/dotnet-server-sdk-consul": "5.0.0",
   "pkgs/dotnet-server-sdk-dynamodb": "5.0.0",
   "pkgs/dotnet-server-sdk-redis": "5.1.0",
-  "pkgs/sdk/server": "8.12.1",
+  "pkgs/sdk/server": "8.12.2",
   "pkgs/sdk/client": "5.7.1",
   "pkgs/telemetry": "1.5.0",
   "pkgs/sdk/server-ai": "0.9.3",
diff --git a/pkgs/sdk/server/CHANGELOG.md b/pkgs/sdk/server/CHANGELOG.md
index 737734c3..6c71c662 100644
--- a/pkgs/sdk/server/CHANGELOG.md
+++ b/pkgs/sdk/server/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [8.12.2](https://github.com/launchdarkly/dotnet-core/compare/LaunchDarkly.ServerSdk-v8.12.1...LaunchDarkly.ServerSdk-v8.12.2) (2026-05-19)
+
+
+### Bug Fixes
+
+* use basis query param for FDv2 polling selector ([#260](https://github.com/launchdarkly/dotnet-core/issues/260)) ([abaee9d](https://github.com/launchdarkly/dotnet-core/commit/abaee9dfc16634f4d5a952b68db06cd34e801e39))
+
 ## [8.12.1](https://github.com/launchdarkly/dotnet-core/compare/LaunchDarkly.ServerSdk-v8.12.0...LaunchDarkly.ServerSdk-v8.12.1) (2026-05-12)
 
 
diff --git a/pkgs/sdk/server/PROVENANCE.md b/pkgs/sdk/server/PROVENANCE.md
index a2f00975..23962736 100644
--- a/pkgs/sdk/server/PROVENANCE.md
+++ b/pkgs/sdk/server/PROVENANCE.md
@@ -9,7 +9,7 @@ To verify build provenance attestations, we recommend using the [GitHub CLI `att
 <!-- x-release-please-start-version -->
 ```
 # Set the version of the SDK to verify
-SDK_VERSION=8.12.1
+SDK_VERSION=8.12.2
 ```
 <!-- x-release-please-end -->
 
diff --git a/pkgs/sdk/server/src/LaunchDarkly.ServerSdk.csproj b/pkgs/sdk/server/src/LaunchDarkly.ServerSdk.csproj
index 7ec5ba1b..e9e117e7 100644
--- a/pkgs/sdk/server/src/LaunchDarkly.ServerSdk.csproj
+++ b/pkgs/sdk/server/src/LaunchDarkly.ServerSdk.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <!--x-release-please-start-version-->
-    <Version>8.12.1</Version>
+    <Version>8.12.2</Version>
     <!--x-release-please-end-->
     <!-- The BUILDFRAMEWORKS variable allows us to override the target frameworks with a
          single framework that we are testing; this allows us to test with older SDK