diff --git a/cmake/QtPublicSbomFileHelpers.cmake b/cmake/QtPublicSbomFileHelpers.cmake
index 746dbfad486..838a94ae42f 100644
--- a/cmake/QtPublicSbomFileHelpers.cmake
+++ b/cmake/QtPublicSbomFileHelpers.cmake
@@ -51,6 +51,7 @@ function(_qt_internal_sbom_handle_target_binary_files target)
         # This will be meant for user projects, and are not currently used by Qt's sbom.
         THIRD_PARTY_LIBRARY
         THIRD_PARTY_LIBRARY_WITH_FILES
+        THIRD_PARTY_SOURCES
         EXECUTABLE
         LIBRARY
         TRANSLATIONS
@@ -71,6 +72,7 @@ function(_qt_internal_sbom_handle_target_binary_files target)
         QT_CUSTOM_NO_INFIX
         SYSTEM_LIBRARY
         THIRD_PARTY_LIBRARY
+        THIRD_PARTY_SOURCES
         TRANSLATIONS
         RESOURCES
         CUSTOM
diff --git a/cmake/QtPublicSbomHelpers.cmake b/cmake/QtPublicSbomHelpers.cmake
index dd93b4336d1..ebd99269a5a 100644
--- a/cmake/QtPublicSbomHelpers.cmake
+++ b/cmake/QtPublicSbomHelpers.cmake
@@ -1616,6 +1616,8 @@ function(_qt_internal_sbom_get_package_infix type out_infix)
         set(package_infix "3rdparty-library")
     elseif(type STREQUAL "THIRD_PARTY_LIBRARY_WITH_FILES")
         set(package_infix "3rdparty-library-with-files")
+    elseif(type STREQUAL "THIRD_PARTY_SOURCES")
+        set(package_infix "3rdparty-sources")
     elseif(type STREQUAL "TRANSLATIONS")
         set(package_infix "translations")
     elseif(type STREQUAL "RESOURCES")
@@ -1665,6 +1667,8 @@ function(_qt_internal_sbom_get_package_purpose type out_purpose)
         set(package_purpose "LIBRARY")
     elseif(type STREQUAL "THIRD_PARTY_LIBRARY_WITH_FILES")
         set(package_purpose "LIBRARY")
+    elseif(type STREQUAL "THIRD_PARTY_SOURCES")
+        set(package_purpose "LIBRARY")
     elseif(type STREQUAL "TRANSLATIONS")
         set(package_purpose "OTHER")
     elseif(type STREQUAL "RESOURCES")