diff --git a/programming/library/guidelines-support-library/pspec.xml b/programming/library/guidelines-support-library/pspec.xml
index 35b5c24b99..23c5651807 100644
--- a/programming/library/guidelines-support-library/pspec.xml
+++ b/programming/library/guidelines-support-library/pspec.xml
@@ -13,7 +13,7 @@
         <IsA>library</IsA>
         <Summary>Microsoft Guidelines Support Library</Summary>
         <Description>The Guideline Support Library (GSL) contains functions and types that are suggested for use by the C++ Core Guidelines maintained by the Standard C++ Foundation. This package contains Microsoft's implementation of GSL.</Description>
-        <Archive sha1sum="3f2891a46595806563e7a0e25bb7ecbb30776445" type="targz">https://github.com/microsoft/GSL/archive/v3.1.0.tar.gz</Archive>
+        <Archive sha1sum="909c9540a76fe4b4f71dbbd24126cab3925fb78e" type="targz">https://github.com/microsoft/GSL/archive/v4.0.0.tar.gz</Archive>
         <BuildDependencies>
             <Dependency>cmake</Dependency>
         </BuildDependencies>
@@ -30,6 +30,13 @@
     </Package>
 
     <History>
+        <Update release="3">
+            <Date>2023-06-02</Date>
+            <Version>4.0.0</Version>
+            <Comment>Version bump.</Comment>
+            <Name>Mustafa Cinasal</Name>
+            <Email>muscnsl@gmail.com</Email>
+        </Update>
         <Update release="2">
             <Date>2020-09-23</Date>
             <Version>3.1.0</Version>
@@ -45,4 +52,4 @@
             <Email>safaariman@pisilinux.org</Email>
         </Update>
     </History>
-</PISI>
\ No newline at end of file
+</PISI>