diff --git a/builds/cmake/install-cmake.sh b/builds/cmake/install-cmake.sh
index cacf681c..b7412079 100755
--- a/builds/cmake/install-cmake.sh
+++ b/builds/cmake/install-cmake.sh
@@ -462,21 +462,23 @@ main()
     UltrafastSecp256k1_FLAGS=()
 
     UltrafastSecp256k1_OPTIONS=(
-        "-DSECP256K1_BUILD_TESTS=OFF"
-        "-DSECP256K1_BUILD_BENCH=OFF"
-        "-DSECP256K1_BUILD_EXAMPLES=OFF"
-        "-DSECP256K1_BUILD_JAVA=OFF"
-        "-DUFSECP_BUILD_SHARED=OFF"
         "-DSECP256K1_BUILD_CABI=ON"
         "-DSECP256K1_BUILD_CPU=ON"
         "-DSECP256K1_BUILD_SHIM=ON"
+        "-DSECP256K1_USE_ULTRAFAST=ON"
         "-DSECP256K1_BUILD_CUDA=ON"
         "-DSECP256K1_BUILD_ROCM=ON"
         "-DSECP256K1_BUILD_OPENCL=ON"
         "-DSECP256K1_BUILD_METAL=ON"
+        "-DSECP256K1_BUILD_BENCH=OFF"
+        "-DSECP256K1_BUILD_EXAMPLES=OFF"
+        "-DSECP256K1_BUILD_JAVA=OFF"
+        "-DSECP256K1_BUILD_TESTS=OFF"
+        "-DSECP256K1_SHIM_BUILD_SHARED=OFF"
+        "-DUFSECP_BUILD_SHARED=OFF"
         "-DSECP256K1_INSTALL=ON"
-        "-DSECP256K1_INSTALL_PKGCONFIG=ON"
-        "-DSECP256K1_USE_ULTRAFAST=ON")
+        "-DSECP256K1_SHIM_INSTALL=ON"
+        "-DSECP256K1_INSTALL_PKGCONFIG=ON")
 
     libbitcoin_system_FLAGS=()
 
diff --git a/builds/cmake/install-presets.sh b/builds/cmake/install-presets.sh
index 93dbb6da..0123ed5b 100755
--- a/builds/cmake/install-presets.sh
+++ b/builds/cmake/install-presets.sh
@@ -478,21 +478,23 @@ main()
     UltrafastSecp256k1_FLAGS=()
 
     UltrafastSecp256k1_OPTIONS=(
-        "-DSECP256K1_BUILD_TESTS=OFF"
-        "-DSECP256K1_BUILD_BENCH=OFF"
-        "-DSECP256K1_BUILD_EXAMPLES=OFF"
-        "-DSECP256K1_BUILD_JAVA=OFF"
-        "-DUFSECP_BUILD_SHARED=OFF"
         "-DSECP256K1_BUILD_CABI=ON"
         "-DSECP256K1_BUILD_CPU=ON"
         "-DSECP256K1_BUILD_SHIM=ON"
+        "-DSECP256K1_USE_ULTRAFAST=ON"
         "-DSECP256K1_BUILD_CUDA=ON"
         "-DSECP256K1_BUILD_ROCM=ON"
         "-DSECP256K1_BUILD_OPENCL=ON"
         "-DSECP256K1_BUILD_METAL=ON"
+        "-DSECP256K1_BUILD_BENCH=OFF"
+        "-DSECP256K1_BUILD_EXAMPLES=OFF"
+        "-DSECP256K1_BUILD_JAVA=OFF"
+        "-DSECP256K1_BUILD_TESTS=OFF"
+        "-DSECP256K1_SHIM_BUILD_SHARED=OFF"
+        "-DUFSECP_BUILD_SHARED=OFF"
         "-DSECP256K1_INSTALL=ON"
-        "-DSECP256K1_INSTALL_PKGCONFIG=ON"
-        "-DSECP256K1_USE_ULTRAFAST=ON")
+        "-DSECP256K1_SHIM_INSTALL=ON"
+        "-DSECP256K1_INSTALL_PKGCONFIG=ON")
 
     libbitcoin_system_FLAGS=()
 
diff --git a/builds/gnu/install-gnu.sh b/builds/gnu/install-gnu.sh
index 3e39d14c..5d740200 100755
--- a/builds/gnu/install-gnu.sh
+++ b/builds/gnu/install-gnu.sh
@@ -490,21 +490,23 @@ main()
     UltrafastSecp256k1_FLAGS=()
 
     UltrafastSecp256k1_OPTIONS=(
-        "-DSECP256K1_BUILD_TESTS=OFF"
-        "-DSECP256K1_BUILD_BENCH=OFF"
-        "-DSECP256K1_BUILD_EXAMPLES=OFF"
-        "-DSECP256K1_BUILD_JAVA=OFF"
-        "-DUFSECP_BUILD_SHARED=OFF"
         "-DSECP256K1_BUILD_CABI=ON"
         "-DSECP256K1_BUILD_CPU=ON"
         "-DSECP256K1_BUILD_SHIM=ON"
+        "-DSECP256K1_USE_ULTRAFAST=ON"
         "-DSECP256K1_BUILD_CUDA=ON"
         "-DSECP256K1_BUILD_ROCM=ON"
         "-DSECP256K1_BUILD_OPENCL=ON"
         "-DSECP256K1_BUILD_METAL=ON"
+        "-DSECP256K1_BUILD_BENCH=OFF"
+        "-DSECP256K1_BUILD_EXAMPLES=OFF"
+        "-DSECP256K1_BUILD_JAVA=OFF"
+        "-DSECP256K1_BUILD_TESTS=OFF"
+        "-DSECP256K1_SHIM_BUILD_SHARED=OFF"
+        "-DUFSECP_BUILD_SHARED=OFF"
         "-DSECP256K1_INSTALL=ON"
-        "-DSECP256K1_INSTALL_PKGCONFIG=ON"
-        "-DSECP256K1_USE_ULTRAFAST=ON")
+        "-DSECP256K1_SHIM_INSTALL=ON"
+        "-DSECP256K1_INSTALL_PKGCONFIG=ON")
 
     libbitcoin_system_FLAGS=()
 
diff --git a/builds/gnu/test_runner.sh b/builds/gnu/test_runner.sh
index f3aaa30e..b43d755f 100755
--- a/builds/gnu/test_runner.sh
+++ b/builds/gnu/test_runner.sh
@@ -8,13 +8,7 @@
 
 # Define tests and options.
 #==============================================================================
-BOOST_UNIT_TEST_OPTIONS=\
-    "--log_level=warning "\
-    "--show_progress=no "\
-    "--detect_memory_leak=0 "\
-    "--report_level=no "\
-    "--build-info=yes "\
-    "--run_tests=*"
+BOOST_UNIT_TEST_OPTIONS="--log_level=warning --show_progress=no --detect_memory_leak=0 --report_level=no --build_info=yes --run_test=*"
 
 # Run tests.
 #==============================================================================
diff --git a/builds/msvc/vs2022/libbitcoin-node-test/libbitcoin-node-test.props b/builds/msvc/vs2022/libbitcoin-node-test/libbitcoin-node-test.props
index 3db6cdad..b2d9d4ca 100644
--- a/builds/msvc/vs2022/libbitcoin-node-test/libbitcoin-node-test.props
+++ b/builds/msvc/vs2022/libbitcoin-node-test/libbitcoin-node-test.props
@@ -56,9 +56,6 @@
     <Linkage-libbitcoin-network>static</Linkage-libbitcoin-network>
     <Linkage-libbitcoin-node>static</Linkage-libbitcoin-node>
   </PropertyGroup>
-  <PropertyGroup Condition="'$(Option-ultrafast)' == 'true' And '$(Option-cuda)' == 'true'">
-    <Linkage-ultrafast>cuda</Linkage-ultrafast>
-  </PropertyGroup>
 
   <!-- Messages -->
 
diff --git a/builds/msvc/vs2022/libbitcoin-node/libbitcoin-node.props b/builds/msvc/vs2022/libbitcoin-node/libbitcoin-node.props
index d76f974d..10beb2d4 100644
--- a/builds/msvc/vs2022/libbitcoin-node/libbitcoin-node.props
+++ b/builds/msvc/vs2022/libbitcoin-node/libbitcoin-node.props
@@ -57,9 +57,6 @@
     <Linkage-libbitcoin-database>static</Linkage-libbitcoin-database>
     <Linkage-libbitcoin-network>static</Linkage-libbitcoin-network>
   </PropertyGroup>
-  <PropertyGroup Condition="'$(Option-ultrafast)' == 'true' And '$(Option-cuda)' == 'true'">
-    <Linkage-ultrafast>cuda</Linkage-ultrafast>
-  </PropertyGroup>
 
   <!-- Messages -->
 
diff --git a/builds/msvc/vs2026/libbitcoin-node-test/libbitcoin-node-test.props b/builds/msvc/vs2026/libbitcoin-node-test/libbitcoin-node-test.props
index 3db6cdad..b2d9d4ca 100644
--- a/builds/msvc/vs2026/libbitcoin-node-test/libbitcoin-node-test.props
+++ b/builds/msvc/vs2026/libbitcoin-node-test/libbitcoin-node-test.props
@@ -56,9 +56,6 @@
     <Linkage-libbitcoin-network>static</Linkage-libbitcoin-network>
     <Linkage-libbitcoin-node>static</Linkage-libbitcoin-node>
   </PropertyGroup>
-  <PropertyGroup Condition="'$(Option-ultrafast)' == 'true' And '$(Option-cuda)' == 'true'">
-    <Linkage-ultrafast>cuda</Linkage-ultrafast>
-  </PropertyGroup>
 
   <!-- Messages -->
 
diff --git a/builds/msvc/vs2026/libbitcoin-node-test/libbitcoin-node-test.vcxproj b/builds/msvc/vs2026/libbitcoin-node-test/libbitcoin-node-test.vcxproj
index 1ed68de9..bbd72b19 100644
--- a/builds/msvc/vs2026/libbitcoin-node-test/libbitcoin-node-test.vcxproj
+++ b/builds/msvc/vs2026/libbitcoin-node-test/libbitcoin-node-test.vcxproj
@@ -161,7 +161,7 @@
     <Import Project="$(NuGetPackageRoot)libbitcoin-boost_unit_test_framework-vc145.1.91.0\build\libbitcoin-boost_unit_test_framework-vc145.targets" Condition="Exists('$(NuGetPackageRoot)libbitcoin-boost_unit_test_framework-vc145.1.91.0\build\libbitcoin-boost_unit_test_framework-vc145.targets')" />
     <Import Project="$(NuGetPackageRoot)libbitcoin-boost_url-vc145.1.91.0\build\libbitcoin-boost_url-vc145.targets" Condition="Exists('$(NuGetPackageRoot)libbitcoin-boost_url-vc145.1.91.0\build\libbitcoin-boost_url-vc145.targets')" />
     <Import Project="$(NuGetPackageRoot)secp256k1_vc145.0.6.1.2\build\native\secp256k1_vc145.targets" Condition="Exists('$(NuGetPackageRoot)secp256k1_vc145.0.6.1.2\build\native\secp256k1_vc145.targets')" />
-    <Import Project="$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.4.0.4\build\native\UltrafastSecp256k1-vc145.targets" Condition="Exists('$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.4.0.4\build\native\UltrafastSecp256k1-vc145.targets')" />
+    <Import Project="$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.5.0.0\build\native\UltrafastSecp256k1-vc145.targets" Condition="Exists('$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.5.0.0\build\native\UltrafastSecp256k1-vc145.targets')" />
   </ImportGroup>
   <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
     <PropertyGroup>
@@ -177,7 +177,7 @@
     <Error Condition="!Exists('$(NuGetPackageRoot)libbitcoin-boost_unit_test_framework-vc145.1.91.0\build\libbitcoin-boost_unit_test_framework-vc145.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)libbitcoin-boost_unit_test_framework-vc145.1.91.0\build\libbitcoin-boost_unit_test_framework-vc145.targets'))" />
     <Error Condition="!Exists('$(NuGetPackageRoot)libbitcoin-boost_url-vc145.1.91.0\build\libbitcoin-boost_url-vc145.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)libbitcoin-boost_url-vc145.1.91.0\build\libbitcoin-boost_url-vc145.targets'))" />
     <Error Condition="!Exists('$(NuGetPackageRoot)secp256k1_vc145.0.6.1.2\build\native\secp256k1_vc145.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)secp256k1_vc145.0.6.1.2\build\native\secp256k1_vc145.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.4.0.4\build\native\UltrafastSecp256k1-vc145.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.4.0.4\build\native\UltrafastSecp256k1-vc145.targets'))" />
+    <Error Condition="!Exists('$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.5.0.0\build\native\UltrafastSecp256k1-vc145.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.5.0.0\build\native\UltrafastSecp256k1-vc145.targets'))" />
   </Target>
   <ItemGroup>
     <ProjectReference Include="..\libbitcoin-node\libbitcoin-node.vcxproj">
diff --git a/builds/msvc/vs2026/libbitcoin-node-test/packages.config b/builds/msvc/vs2026/libbitcoin-node-test/packages.config
index d857213a..aaf666e8 100644
--- a/builds/msvc/vs2026/libbitcoin-node-test/packages.config
+++ b/builds/msvc/vs2026/libbitcoin-node-test/packages.config
@@ -6,7 +6,7 @@
  |
  -->
 <packages>
-  <package id="UltrafastSecp256k1-vc145" version="4.4.0.4" targetFramework="Native" />
+  <package id="UltrafastSecp256k1-vc145" version="4.5.0.0" targetFramework="Native" />
   <package id="libbitcoin-boost" version="1.91.0" targetFramework="Native" />
   <package id="libbitcoin-boost_container-vc145" version="1.91.0" targetFramework="Native" />
   <package id="libbitcoin-boost_iostreams-vc145" version="1.91.0" targetFramework="Native" />
diff --git a/builds/msvc/vs2026/libbitcoin-node/libbitcoin-node.props b/builds/msvc/vs2026/libbitcoin-node/libbitcoin-node.props
index d76f974d..10beb2d4 100644
--- a/builds/msvc/vs2026/libbitcoin-node/libbitcoin-node.props
+++ b/builds/msvc/vs2026/libbitcoin-node/libbitcoin-node.props
@@ -57,9 +57,6 @@
     <Linkage-libbitcoin-database>static</Linkage-libbitcoin-database>
     <Linkage-libbitcoin-network>static</Linkage-libbitcoin-network>
   </PropertyGroup>
-  <PropertyGroup Condition="'$(Option-ultrafast)' == 'true' And '$(Option-cuda)' == 'true'">
-    <Linkage-ultrafast>cuda</Linkage-ultrafast>
-  </PropertyGroup>
 
   <!-- Messages -->
 
diff --git a/builds/msvc/vs2026/libbitcoin-node/libbitcoin-node.vcxproj b/builds/msvc/vs2026/libbitcoin-node/libbitcoin-node.vcxproj
index b7b357c0..403d117c 100644
--- a/builds/msvc/vs2026/libbitcoin-node/libbitcoin-node.vcxproj
+++ b/builds/msvc/vs2026/libbitcoin-node/libbitcoin-node.vcxproj
@@ -241,7 +241,7 @@
     <Import Project="$(NuGetPackageRoot)libbitcoin-boost_thread-vc145.1.91.0\build\libbitcoin-boost_thread-vc145.targets" Condition="Exists('$(NuGetPackageRoot)libbitcoin-boost_thread-vc145.1.91.0\build\libbitcoin-boost_thread-vc145.targets')" />
     <Import Project="$(NuGetPackageRoot)libbitcoin-boost_url-vc145.1.91.0\build\libbitcoin-boost_url-vc145.targets" Condition="Exists('$(NuGetPackageRoot)libbitcoin-boost_url-vc145.1.91.0\build\libbitcoin-boost_url-vc145.targets')" />
     <Import Project="$(NuGetPackageRoot)secp256k1_vc145.0.6.1.2\build\native\secp256k1_vc145.targets" Condition="Exists('$(NuGetPackageRoot)secp256k1_vc145.0.6.1.2\build\native\secp256k1_vc145.targets')" />
-    <Import Project="$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.4.0.4\build\native\UltrafastSecp256k1-vc145.targets" Condition="Exists('$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.4.0.4\build\native\UltrafastSecp256k1-vc145.targets')" />
+    <Import Project="$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.5.0.0\build\native\UltrafastSecp256k1-vc145.targets" Condition="Exists('$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.5.0.0\build\native\UltrafastSecp256k1-vc145.targets')" />
   </ImportGroup>
   <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
     <PropertyGroup>
@@ -256,7 +256,7 @@
     <Error Condition="!Exists('$(NuGetPackageRoot)libbitcoin-boost_thread-vc145.1.91.0\build\libbitcoin-boost_thread-vc145.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)libbitcoin-boost_thread-vc145.1.91.0\build\libbitcoin-boost_thread-vc145.targets'))" />
     <Error Condition="!Exists('$(NuGetPackageRoot)libbitcoin-boost_url-vc145.1.91.0\build\libbitcoin-boost_url-vc145.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)libbitcoin-boost_url-vc145.1.91.0\build\libbitcoin-boost_url-vc145.targets'))" />
     <Error Condition="!Exists('$(NuGetPackageRoot)secp256k1_vc145.0.6.1.2\build\native\secp256k1_vc145.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)secp256k1_vc145.0.6.1.2\build\native\secp256k1_vc145.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.4.0.4\build\native\UltrafastSecp256k1-vc145.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.4.0.4\build\native\UltrafastSecp256k1-vc145.targets'))" />
+    <Error Condition="!Exists('$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.5.0.0\build\native\UltrafastSecp256k1-vc145.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.5.0.0\build\native\UltrafastSecp256k1-vc145.targets'))" />
   </Target>
   <ItemGroup>
     <Natvis Include="..\..\debug.natvis" />
diff --git a/builds/msvc/vs2026/libbitcoin-node/packages.config b/builds/msvc/vs2026/libbitcoin-node/packages.config
index 8c330831..c699d18a 100644
--- a/builds/msvc/vs2026/libbitcoin-node/packages.config
+++ b/builds/msvc/vs2026/libbitcoin-node/packages.config
@@ -6,7 +6,7 @@
  |
  -->
 <packages>
-  <package id="UltrafastSecp256k1-vc145" version="4.4.0.4" targetFramework="Native" />
+  <package id="UltrafastSecp256k1-vc145" version="4.5.0.0" targetFramework="Native" />
   <package id="libbitcoin-boost" version="1.91.0" targetFramework="Native" />
   <package id="libbitcoin-boost_container-vc145" version="1.91.0" targetFramework="Native" />
   <package id="libbitcoin-boost_iostreams-vc145" version="1.91.0" targetFramework="Native" />