diff --git a/README.md b/README.md
index b893b21e159ac086bf475cf08bb1f887e33398e9..1b2d6e6239dbf34588c8ea444151e0ecd953c3e7 100644
--- a/README.md
+++ b/README.md
@@ -199,10 +199,16 @@ Hub-CDB and Institut Pasteur
 <br /><br />
 ## WHAT'S NEW IN
 
+### v18.0.0
+
+1) S:K417N position added as critical because of https://www.reuters.com/business/healthcare-pharmaceuticals/what-is-delta-variant-coronavirus-with-k417n-mutation-2021-06-23/
+
+
 ### v17.0.0
 
 1) scan() improved to be adapted to any header of fasta file
 
+
 ### v16.0.0
 
 1) New critical_pos.txt file format
diff --git a/dataset/20210603_critical_pos.txt b/dataset/20210626_critical_pos.txt
similarity index 93%
rename from dataset/20210603_critical_pos.txt
rename to dataset/20210626_critical_pos.txt
index eb5ab448ef6cf6ad8d630f900d51a3c5c5a7bf2a..96053f2e793e7660c73529f392aed8fe0c99e9a5 100644
--- a/dataset/20210603_critical_pos.txt
+++ b/dataset/20210626_critical_pos.txt
@@ -1,6 +1,7 @@
 # GATK positions for the deletions						
 chr	begin_pos	end_pos	codon_ref	orf	name	ini_concern_name
 MN908947_Ampliseq	21563	21565	ACA	S	S:T19	S:T19R
+MN908947_Ampliseq	22757	22759	AAG	S	S:K417	S:K417N
 MN908947_Ampliseq	22826	22828	AAT	S	S:N440	S:N440K
 MN908947_Ampliseq	22862	22864	CTG	S	S:L452	S:L452R
 MN908947_Ampliseq	22937	22939	AGC	S	S:S477	S:S477N