diff --git a/karolina.csv b/karolina.csv
index 0e013eff736f1943fd59590455ae2f8337c7d47d..afe4dd851ebb44c6499022fcad92fe76590398a7 100644
--- a/karolina.csv
+++ b/karolina.csv
@@ -852,6 +852,7 @@ libwebp/1.3.2-GCCcore-13.2.0,1
 libxc/4.3.4-intel-2020b,1
 libxc/5.1.5-intel-2020a,1
 libxc/5.1.5-intel-compilers-2021.2.0,1
+libxc/5.1.6-intel-compilers-2021.4.0,1
 libxc/5.2.3-GCC-11.3.0,1
 libxc/5.2.3-intel-compilers-2022.1.0,1
 libxc/6.2.2-intel-compilers-2023.2.1,1