diff --git a/tools/package_release.py b/tools/package_release.py
index 25474b757e..cc67ede80b 100644
--- a/tools/package_release.py
+++ b/tools/package_release.py
@@ -12,7 +12,7 @@ ROOT = Path(__file__).resolve().parent.parent
 
 
 def windows_runtime(build):
-    for line in (build / "CMakeCache.txt").read_text(encoding="utf-8").splitlines():
+    for line in (build / "CMakeCache.txt").read_text(encoding="utf-8-sig").splitlines():
         if line.startswith("CMAKE_CXX_COMPILER:"):
             compiler = line.partition("=")[2]
             if compiler and not compiler.endswith("-NOTFOUND"):
@@ -24,7 +24,7 @@ def tracy_runtime(platform, build):
     cache = build / "CMakeCache.txt"
     if not cache.is_file():
         return []
-    lines = cache.read_text(encoding="utf-8").splitlines()
+    lines = cache.read_text(encoding="utf-8-sig").splitlines()
     enabled = next((line.partition("=")[2].upper() for line in lines if line.startswith("APS5_ENABLE_TRACY:")), "OFF")
     if enabled in ("", "0", "OFF", "NO", "FALSE", "N", "IGNORE", "NOTFOUND") or enabled.endswith("-NOTFOUND"):
         return []
diff --git a/tools/tests/test_package_release.py b/tools/tests/test_package_release.py
index e03d526eb4..0ee65bb86b 100644
--- a/tools/tests/test_package_release.py
+++ b/tools/tests/test_package_release.py
@@ -82,6 +82,17 @@ class ReleasePackageTests(unittest.TestCase):
         self.assertEqual(list(self.output.iterdir()), [previous])
         self.assertEqual(previous.read_bytes(), b"existing output")
 
+    def test_windows_runtime_decodes_cmake_cache_with_utf8_bom(self):
+        compiler = self.root / "custom toolchain" / "bin" / "g++.exe"
+        (self.build / "CMakeCache.txt").write_bytes(b"\xef\xbb\xbfCMAKE_CXX_COMPILER:STRING=" + compiler.as_posix().encode("utf-8") + b"\n")
+        self.assertEqual(package_release.windows_runtime(self.build), compiler.parent)
+
+    def test_tracy_runtime_decodes_cmake_cache_with_utf8_bom(self):
+        client = self.build / "core/libs/libs/libTracyClient.dll"
+        client.write_bytes(b"client")
+        (self.build / "CMakeCache.txt").write_bytes(b"\xef\xbb\xbfAPS5_ENABLE_TRACY:BOOL=ON\n")
+        self.assertEqual(package_release.tracy_runtime("windows", self.build), [client])
+
     def test_tracy_packages_include_only_the_target_platform_client(self):
         directory = self.build / "core/libs/libs"
         for platform, name in (("linux", "libTracyClient.so.0.14.1"), ("windows", "libTracyClient.dll")):