diff --git a/docs/tool_and_data_change_tracking.md b/docs/tool_and_data_change_tracking.md
index 5116bced6692847854b774040195bd867848b2ce..a850993ac8e6841adeabf51cda081e5f6bc45897 100644
--- a/docs/tool_and_data_change_tracking.md
+++ b/docs/tool_and_data_change_tracking.md
@@ -39,6 +39,6 @@ effects_transcript | 2017-03-16 | 2017-03-16 | 2017-03-16 |
 varpon | 20181105 | 20181105 | 20181105 | 
 vcfanno | 20190119 | 20190119 | **20210204** | VCF annotations, not used
 viral | 2017.02.04 | 2017.02.04 | 2017.02.04 | 
-gnomad genomes | 2.1 | **3.0** | **3.1.1** | VCF annotations
-gnomad exomes | 2.1 | 2.1 | **2.1.1** | VCF annotations
+gnomad genomes | 2.1 | **3.0** | **3.1.1** | VCF annotations, used by G2P for MAF thresholding
+gnomad exomes | 2.1 | 2.1 | **2.1.1** | VCF annotations, used by G2P for MAF thresholding
 dbnsfp | 3.5a | not installed | not installed | VCF annotations, not used