diff --git a/vignettes/seismicGWAS.Rmd b/vignettes/seismicGWAS.Rmd
index a230b5f..ba107e6 100644
--- a/vignettes/seismicGWAS.Rmd
+++ b/vignettes/seismicGWAS.Rmd
@@ -119,7 +119,12 @@ Next, to aid in result interpretation we make use of the `biomaRt` package to
 convert entrez ids to gene symbols.
 ```{r message=FALSE}
 # convert ids to symbols using biomaRt
-library(biomaRt)
+if (!require(biomaRt)){
+  if (!require(BiocManager, quietly = TRUE))
+    install.packages("BiocManager")
+  BiocManager::install("biomaRt")
+  library(biomaRt)
+}
 
 ensembl <- useMart("ensembl", dataset = "hsapiens_gene_ensembl")
 hsa.map <- getBM(attributes = c('entrezgene_id', 'hgnc_symbol'),