diff --git a/docs/04-genomic-file-formats/index.md b/docs/04-genomic-file-formats/index.md
index 7b6c449..0902b9b 100644
--- a/docs/04-genomic-file-formats/index.md
+++ b/docs/04-genomic-file-formats/index.md
@@ -5,8 +5,8 @@ to find that genomics file types are quite simple in structure. In fact, a
 majority of universal file formats such as
 [SAM/BAM](https://samtools.github.io/hts-specs/SAMv1.pdf),
 [VCF](https://samtools.github.io/hts-specs/VCFv4.2.pdf),
-[BED](https://uswest.ensembl.org/info/website/upload/bed.html),
-[GFF/GTF](https://uswest.ensembl.org/info/website/upload/gff.html) and many
+[BED](https://www.ensembl.org/info/website/upload/bed.html),
+[GFF/GTF](https://www.ensembl.org/info/website/upload/gff.html) and many
 other custom formats are essentially tab-delimited text files with some form of
 compression and/or serialization. In this chapter, we cover the main file
 formats one might run into when working in the genomics domain, starting with