diff --git a/ports/libsigcpp/fix_version.patch b/ports/libsigcpp/fix_version.patch
deleted file mode 100644
index 2fdb77681b..0000000000
--- a/ports/libsigcpp/fix_version.patch
+++ /dev/null
@@ -1,14 +0,0 @@
-diff --git a/CMakeLists.txt b/CMakeLists.txt
---- a/CMakeLists.txt
-+++ b/CMakeLists.txt
-@@ -16,9 +16,9 @@
- 
- cmake_minimum_required (VERSION 3.2)
- 
- set (SIGCXX_MAJOR_VERSION 3)
--set (SIGCXX_MINOR_VERSION 4)
-+set (SIGCXX_MINOR_VERSION 6)
- set (SIGCXX_MICRO_VERSION 0)
- 
- set (SIGCXX_API_VERSION 3.0)
- set (PACKAGE_VERSION ${SIGCXX_MAJOR_VERSION}.${SIGCXX_MINOR_VERSION}.${SIGCXX_MICRO_VERSION})
diff --git a/ports/libsigcpp/portfile.cmake b/ports/libsigcpp/portfile.cmake
index 1a04bbc729..5ace170ab6 100644
--- a/ports/libsigcpp/portfile.cmake
+++ b/ports/libsigcpp/portfile.cmake
@@ -2,13 +2,12 @@ vcpkg_from_github(
     OUT_SOURCE_PATH SOURCE_PATH
     REPO libsigcplusplus/libsigcplusplus
     REF "${VERSION}"
-    SHA512 0d22275995a1629ae73b0cc2b2f2598b18aa0ed6d35bd3f1735a50f54d356fb248dedc8d9b5f2794830866b04e0f58ce641048e2df7215ec2e6eac744de58a27
+    SHA512 8fc90594fe161a4fd82b88fe4b0cb5b667d61712dae47982ba569775b4a855e03d4b30d3ba232f96e6a98f87473f7c9d4948b7a17a3f9ca2da547f95b6f91a40
     HEAD_REF master
     PATCHES
         disable_tests_enable_static_build.patch
         fix-shared-windows-build.patch
         fix_include_path.patch
-        fix_version.patch
 )
 
 vcpkg_cmake_configure(
@@ -20,7 +19,9 @@ vcpkg_fixup_pkgconfig()
 vcpkg_cmake_config_fixup(PACKAGE_NAME sigc++-3 CONFIG_PATH lib/cmake/sigc++-3)
 
 if(VCPKG_LIBRARY_LINKAGE STREQUAL "dynamic")
-    vcpkg_replace_string("${CURRENT_PACKAGES_DIR}/include/sigc++config.h" "ifdef BUILD_SHARED" "if 1" IGNORE_UNCHANGED)
+    vcpkg_replace_string("${CURRENT_PACKAGES_DIR}/include/sigc++config.h" "#ifdef SIGC_DLL" "#if 1")
+else()
+    vcpkg_replace_string("${CURRENT_PACKAGES_DIR}/include/sigc++config.h" "#ifdef SIGC_DLL" "#if 0")
 endif()
 
 file(REMOVE_RECURSE "${CURRENT_PACKAGES_DIR}/debug/include")
diff --git a/ports/libsigcpp/vcpkg.json b/ports/libsigcpp/vcpkg.json
index 21dbc8107e..d2262fada7 100644
--- a/ports/libsigcpp/vcpkg.json
+++ b/ports/libsigcpp/vcpkg.json
@@ -1,7 +1,6 @@
 {
   "name": "libsigcpp",
-  "version": "3.6.0",
-  "port-version": 2,
+  "version": "3.8.0",
   "description": "Typesafe callback framework for C++",
   "homepage": "https://libsigcplusplus.github.io/libsigcplusplus/",
   "license": "LGPL-3.0-or-later",
diff --git a/scripts/test_ports/vcpkg-ci-libsigcpp/portfile.cmake b/scripts/test_ports/vcpkg-ci-libsigcpp/portfile.cmake
new file mode 100644
index 0000000000..bc785962c8
--- /dev/null
+++ b/scripts/test_ports/vcpkg-ci-libsigcpp/portfile.cmake
@@ -0,0 +1,4 @@
+set(VCPKG_POLICY_EMPTY_PACKAGE enabled)
+
+vcpkg_cmake_configure(SOURCE_PATH "${CURRENT_PORT_DIR}/project")
+vcpkg_cmake_build()
diff --git a/scripts/test_ports/vcpkg-ci-libsigcpp/project/CMakeLists.txt b/scripts/test_ports/vcpkg-ci-libsigcpp/project/CMakeLists.txt
new file mode 100755
index 0000000000..0a696c2767
--- /dev/null
+++ b/scripts/test_ports/vcpkg-ci-libsigcpp/project/CMakeLists.txt
@@ -0,0 +1,9 @@
+cmake_minimum_required(VERSION 3.10)
+project(vcpkg_ci_libsigcpp)
+
+set(CMAKE_CXX_STANDARD 17)
+
+find_package(sigc++-3 CONFIG REQUIRED)
+
+add_executable(vcpkg_ci_libsigcpp main.cpp)
+target_link_libraries(vcpkg_ci_libsigcpp PRIVATE sigc-3.0)
diff --git a/scripts/test_ports/vcpkg-ci-libsigcpp/project/main.cpp b/scripts/test_ports/vcpkg-ci-libsigcpp/project/main.cpp
new file mode 100755
index 0000000000..f399aa5ce4
--- /dev/null
+++ b/scripts/test_ports/vcpkg-ci-libsigcpp/project/main.cpp
@@ -0,0 +1,14 @@
+#include <sigc++/sigc++.h>
+#include <iostream>
+#include <string>
+
+void on_print(const std::string &str) {
+    std::cout << str;
+}
+
+int main() {
+    sigc::signal<void(const std::string &)> signal_print;
+    signal_print.connect(sigc::ptr_fun(&on_print));
+    signal_print.emit("hello world\n");
+    return 0;
+}
diff --git a/scripts/test_ports/vcpkg-ci-libsigcpp/vcpkg.json b/scripts/test_ports/vcpkg-ci-libsigcpp/vcpkg.json
new file mode 100644
index 0000000000..d8d991fb96
--- /dev/null
+++ b/scripts/test_ports/vcpkg-ci-libsigcpp/vcpkg.json
@@ -0,0 +1,13 @@
+{
+  "name": "vcpkg-ci-libsigcpp",
+  "version-date": "2026-03-31",
+  "description": "Validates libsigcpp",
+  "license": null,
+  "dependencies": [
+    "libsigcpp",
+    {
+      "name": "vcpkg-cmake",
+      "host": true
+    }
+  ]
+}
diff --git a/versions/baseline.json b/versions/baseline.json
index 17dc4b6f78..310f87f716 100644
--- a/versions/baseline.json
+++ b/versions/baseline.json
@@ -5549,8 +5549,8 @@
       "port-version": 0
     },
     "libsigcpp": {
-      "baseline": "3.6.0",
-      "port-version": 2
+      "baseline": "3.8.0",
+      "port-version": 0
     },
     "libslirp": {
       "baseline": "4.9.1",
diff --git a/versions/l-/libsigcpp.json b/versions/l-/libsigcpp.json
index 6b8daa7f7b..a2362dd753 100644
--- a/versions/l-/libsigcpp.json
+++ b/versions/l-/libsigcpp.json
@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "ba1c1f9f00c4a0051889a9584c442251c2134dd0",
+      "version": "3.8.0",
+      "port-version": 0
+    },
     {
       "git-tree": "5b48fe434789aee633527a307273c41f0b8be925",
       "version": "3.6.0",