diff --git a/CMakeLists.txt b/CMakeLists.txt
index 49ae4df..8a640ea 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -11,7 +11,7 @@ set(BUILTIN_SOCKET ON CACHE BOOL "") # for static Python
 # configure basic project information
 project(osslsigncode
     VERSION 2.10
-    DESCRIPTION "OpenSSL based Authenticode signing for PE, CAB, CAT and MSI files"
+    DESCRIPTION "OpenSSL based Authenticode signing for PE, CAB, CAT, MSI, APPX and script files"
     HOMEPAGE_URL "https://github.com/mtrojnar/osslsigncode"
     LANGUAGES C)
 
diff --git a/LICENSE.txt b/LICENSE.txt
index bee8331..dfc3136 100644
--- a/LICENSE.txt
+++ b/LICENSE.txt
@@ -1,4 +1,4 @@
-OpenSSL based Authenticode signing for PE/MSI/Java CAB files.
+OpenSSL based Authenticode signing for PE, CAB, CAT, MSI, APPX and script files.
 
 Copyright (C) 2005-2014 Per Allansson <pallansson@gmail.com>
 Copyright (C) 2018-2022 Michał Trojnara <Michal.Trojnara@stunnel.org>
diff --git a/README.md b/README.md
index 9d6f411..ce4b56b 100644
--- a/README.md
+++ b/README.md
@@ -23,7 +23,9 @@ tool  would fail. And, so, osslsigncode was born.
 
 ## WHAT CAN IT DO?
 
-It can sign and timestamp PE (EXE/SYS/DLL/etc), CAB, CAT and MSI files.
+It can sign and timestamp PE (EXE/SYS/DLL/etc), CAB, CAT, MSI and APPX files,
+as well as script files with extensions `.ps1`, `.ps1xml`, `.psc1`, `.psd1`,
+`.psm1`, `.cdxml`, `.mof`, and `.js`.
 It supports the equivalent of signtool.exe's "-j javasign.dll -jp low",
 i.e. add a valid signature for a CAB file containing Java files.
 It supports getting the timestamp through a proxy as well. It also
diff --git a/cmake/CMakeDist.cmake b/cmake/CMakeDist.cmake
index b773846..be47759 100644
--- a/cmake/CMakeDist.cmake
+++ b/cmake/CMakeDist.cmake
@@ -3,7 +3,7 @@
 
 set(CPACK_PACKAGE_NAME ${PROJECT_NAME})
 set(CPACK_PACKAGE_VERSION ${PROJECT_VERSION})
-set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "OpenSSL based Authenticode signing for PE, CAB, CAT and MSI files")
+set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "OpenSSL based Authenticode signing for PE, CAB, CAT, MSI, APPX and script files")
 set(CPACK_PACKAGE_INSTALL_DIRECTORY ${CPACK_PACKAGE_NAME})
 set(CPACK_RESOURCE_FILE_README "${CMAKE_CURRENT_SOURCE_DIR}/README.md")
 set(CPACK_RESOURCE_FILE_LICENSE "${CMAKE_CURRENT_SOURCE_DIR}/COPYING.txt")
diff --git a/osslsigncode.c b/osslsigncode.c
index a61d96e..588d507 100644
--- a/osslsigncode.c
+++ b/osslsigncode.c
@@ -1,5 +1,5 @@
 /*
-   OpenSSL based Authenticode signing for PE/MSI/Java CAB files.
+   OpenSSL based Authenticode signing for PE, CAB, CAT, MSI, APPX and script files.
 
    Copyright (C) 2005-2015 Per Allansson <pallansson@gmail.com>
    Copyright (C) 2018-2023 Michał Trojnara <Michal.Trojnara@stunnel.org>
@@ -3786,7 +3786,9 @@ static void help_for(const char *argv0, const char *cmd)
     if (on_list(cmd, cmds_all)) {
         printf("osslsigncode is a small tool that implements part of the functionality of the Microsoft\n");
         printf("tool signtool.exe - more exactly the Authenticode signing and timestamping.\n");
-        printf("It can sign and timestamp PE (EXE/SYS/DLL/etc), CAB and MSI files,\n");
+        printf("It can sign and timestamp PE (EXE/SYS/DLL/etc), CAB, CAT, MSI and APPX files,\n");
+        printf("as well as script files with extensions .ps1, .ps1xml, .psc1, .psd1,\n");
+        printf(".psm1, .cdxml, .mof and .js,\n");
         printf("supports getting the timestamp through a proxy as well.\n");
         printf("osslsigncode also supports signature verification, removal and extraction.\n\n");
         printf("%-22s = print osslsigncode version and usage\n", "--version | -v");