diff --git a/gnu/packages/librewolf.scm b/gnu/packages/librewolf.scm
index 9d08a43ebd8..5ea454431c9 100644
--- a/gnu/packages/librewolf.scm
+++ b/gnu/packages/librewolf.scm
@@ -212,17 +212,17 @@
 ;; It's used for cache validation and therefore can lead to strange bugs.
 ;; ex: date '+%Y%m%d%H%M%S'
 ;; or: (format-time-string "%Y%m%d%H%M%S")
-(define %librewolf-build-id "20250613072513")
+(define %librewolf-build-id "20250628094930")
 
 (define-public librewolf
   (package
     (name "librewolf")
-    (version "139.0.4-1")
+    (version "140.0.2-1")
     (source
      (make-librewolf-source
       #:version version
-      #:firefox-hash "1xc7481g9adrn98ivqgigvdjcpkyk6sa183qvpbwcjgrqczhapjk"
-      #:librewolf-hash "1izrhzzzdighcjm4mmdkalqzxzypn30fyxnbi8y0a489kdsn4j5c"
+      #:firefox-hash "00swi8y46r7yibi2klc0z23j33blydx60972fim6bmgm82l5bbkh"
+      #:librewolf-hash "06v57209s38sqzr77bk2jq3nzd3qjbxd736rwir8x8f0ff19j8n4"
       #:l10n firefox-l10n))
     (build-system gnu-build-system)
     (arguments
diff --git a/gnu/packages/patches/librewolf-use-system-wide-dir.patch b/gnu/packages/patches/librewolf-use-system-wide-dir.patch
index c8a4d8cb123..c1b36af58dd 100644
--- a/gnu/packages/patches/librewolf-use-system-wide-dir.patch
+++ b/gnu/packages/patches/librewolf-use-system-wide-dir.patch
@@ -5,33 +5,33 @@ diff --git a/toolkit/xre/nsXREDirProvider.cpp b/toolkit/xre/nsXREDirProvider.cpp
 index 0cbc825738..5c0bf6ae7f 100644
 --- a/toolkit/xre/nsXREDirProvider.cpp
 +++ b/toolkit/xre/nsXREDirProvider.cpp
-@@ -280,25 +280,11 @@ nsresult nsXREDirProvider::GetBackgroundTasksProfilesRootDir(
- static nsresult GetSystemParentDirectory(nsIFile** aFile) {
+@@ -282,25 +282,10 @@
+                                          nsCString aName = "LibreWolf"_ns) {
    nsresult rv;
    nsCOMPtr<nsIFile> localDir;
 -#  if defined(XP_MACOSX)
 -  rv = GetOSXFolderType(kOnSystemDisk, kApplicationSupportFolderType,
 -                        getter_AddRefs(localDir));
 -  if (NS_SUCCEEDED(rv)) {
--    rv = localDir->AppendNative("LibreWolf"_ns);
+-    rv = localDir->AppendNative(aName);
 -  }
 -#  else
--  constexpr auto dirname =
+-  ToLowerCase(aName);
+-  nsCString dirname =
 -#    ifdef HAVE_USR_LIB64_DIR
--      "/usr/lib64/librewolf"_ns
+-      "/usr/lib64/"_ns + aName
 -#    elif defined(__OpenBSD__) || defined(__FreeBSD__)
--      "/usr/local/lib/librewolf"_ns
+-      "/usr/local/lib/"_ns + aName
 -#    else
--      "/usr/lib/librewolf"_ns
+-      "/usr/lib/"_ns + aName
 -#    endif
 -      ;
 -  rv = NS_NewNativeLocalFile(dirname, getter_AddRefs(localDir));
 -#  endif
 +  const char* systemParentDir = getenv("ICECAT_SYSTEM_DIR");
 +  if (!systemParentDir || !*systemParentDir) return NS_ERROR_FAILURE;
- 
 +  rv = NS_NewNativeLocalFile(nsDependentCString(systemParentDir),
 +                             getter_AddRefs(localDir));
+ 
    if (NS_SUCCEEDED(rv)) {
-     localDir.forget(aFile);
-   }
+     localDir.forget(aFile);
\ No newline at end of file