diff --git a/pkgs/tools/typesetting/biber/default.nix b/pkgs/tools/typesetting/biber/default.nix
index 99ef60b399d..30ea9896c94 100644
--- a/pkgs/tools/typesetting/biber/default.nix
+++ b/pkgs/tools/typesetting/biber/default.nix
@@ -2,10 +2,11 @@
 , BusinessISMN, BusinessISSN, ConfigAutoConf, DataCompare, DataDump, DateSimple
 , DateTime, DateTimeFormatBuilder, DateTimeCalendarJulian
 , EncodeEUCJPASCII, EncodeHanExtra, EncodeJIS2K, ExtUtilsLibBuilder
-, FileSlurp, IPCRun3, Log4Perl, LWPProtocolHttps, ListAllUtils, ListMoreUtils
+, FileSlurp, FileWhich, IPCRun3, Log4Perl, LWPProtocolHttps, ListAllUtils, ListMoreUtils
 , MozillaCA, ReadonlyXS, RegexpCommon, TextBibTeX, UnicodeCollate
 , UnicodeLineBreak, URI, XMLLibXMLSimple, XMLLibXSLT, XMLWriter, ClassAccessor
-, TextCSV, TextRoman, DataUniqid, LinguaTranslit, UnicodeNormalize, SortKey }:
+, TextCSV, TextCSV_XS, TextRoman, DataUniqid, LinguaTranslit, UnicodeNormalize, SortKey
+, TestDifferences }:
 
 buildPerlModule rec {
   name = "biber-${version}";
@@ -21,13 +22,14 @@ buildPerlModule rec {
     autovivification BusinessISBN BusinessISMN BusinessISSN ConfigAutoConf
     DataCompare DataDump DateSimple EncodeEUCJPASCII EncodeHanExtra EncodeJIS2K
     DateTime DateTimeFormatBuilder DateTimeCalendarJulian
-    ExtUtilsLibBuilder FileSlurp IPCRun3 Log4Perl LWPProtocolHttps ListAllUtils
+    ExtUtilsLibBuilder FileSlurp FileWhich IPCRun3 Log4Perl LWPProtocolHttps ListAllUtils
     ListMoreUtils MozillaCA ReadonlyXS RegexpCommon TextBibTeX
     UnicodeCollate UnicodeLineBreak URI XMLLibXMLSimple XMLLibXSLT XMLWriter
-    ClassAccessor TextCSV TextRoman DataUniqid LinguaTranslit UnicodeNormalize SortKey
+    ClassAccessor TextCSV TextCSV_XS TextRoman DataUniqid LinguaTranslit UnicodeNormalize SortKey
+    TestDifferences
   ];
 
-  # Tests seem to be broken
+  # Tests depend on the precise Unicode-Collate version (expects 1.19, but we have 1.25)
   doCheck = false;
 
   postUnpack = ''
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index ebc1ee6c3b6..19026f47525 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -1333,10 +1333,11 @@ with pkgs;
       autovivification BusinessISBN BusinessISMN BusinessISSN ConfigAutoConf
       DataCompare DataDump DateSimple EncodeEUCJPASCII EncodeHanExtra EncodeJIS2K
       DateTime DateTimeFormatBuilder DateTimeCalendarJulian
-      ExtUtilsLibBuilder FileSlurp IPCRun3 Log4Perl LWPProtocolHttps ListAllUtils
+      ExtUtilsLibBuilder FileSlurp FileWhich IPCRun3 Log4Perl LWPProtocolHttps ListAllUtils
       ListMoreUtils MozillaCA ReadonlyXS RegexpCommon TextBibTeX
       UnicodeCollate UnicodeLineBreak URI XMLLibXMLSimple XMLLibXSLT XMLWriter
-      ClassAccessor TextCSV TextRoman DataUniqid LinguaTranslit UnicodeNormalize SortKey;
+      ClassAccessor TextCSV TextCSV_XS TextRoman DataUniqid LinguaTranslit UnicodeNormalize SortKey
+      TestDifferences;
   };
 
   blueman = callPackage ../tools/bluetooth/blueman {