diff --git a/etc/security/limits.conf b/etc/security/limits.conf
index da60232..e7f87bc 100644
--- a/etc/security/limits.conf
+++ b/etc/security/limits.conf
@@ -48,8 +48,6 @@
 #@student        -       maxlogins       4
 
 seiler           hard    nofile          1048576  # temp for benchmark, hd 9. 9. 21 Max open filehandles auf icebear
-rahn             hard    nofile          10000    # temp for benchmark 29.06.2021
-mehringe         hard    nofile          1048576  # temp for benchmark, hd 2. 12. 21 Max open filehandles auf icebear
 
 torprj           hard    nofile          65536
 torbprj          hard    nofile          65536
@@ -57,4 +55,6 @@ torbprj          hard    nofile          65536
 buczek           hard    nofile          30000
 magalhae         hard    nofile          30000
 
+ringel           hard    nofile          32768  # requirement for cellranger software, HD Tue, 22 Oct 2024
+
 # End of file