diff --git a/README.md b/README.md
index 1fcf56e..f48d9e5 100644
--- a/README.md
+++ b/README.md
@@ -18,10 +18,14 @@ EpiSCORE is an R-package for constructing a tissue-specific DNA methylation refe
 
 # Installation
 
-To install:
+To install (you will also need to install the dependency package presto):
 
 ```r
 library(devtools)
+devtools::install_github("immunogenomics/presto")
+if (!require("BiocManager", quietly = TRUE))
+    install.packages("BiocManager")
+BiocManager::install("org.hs.eg.db")
 devtools::install_github("aet21/EpiSCORE")
 ```
 
@@ -29,4 +33,4 @@ devtools::install_github("aet21/EpiSCORE")
 
 Teschendorff AE, Zhu T, Breeze CE, Beck S. EPISCORE: cell type deconvolution of bulk tissue DNA methylomes from single-cell RNA-Seq data. Genome Biology 2020 Sep 4;21(1):221. doi: 10.1186/s13059-020-02126-9 .
 
-Zhu T, Liu J, Beck S, Pan S, Capper D, Lechner M, Thirlwell C, Breeze CE, Teschendorff AE. A pan-tissue DNA methylation atlas enables in silico decomposition of human tissue methylomes at cell-type resolution. Nat Methods 2022 Mar;19(3):296. doi: 10.1038/s41592-022-01412-7 .
\ No newline at end of file
+Zhu T, Liu J, Beck S, Pan S, Capper D, Lechner M, Thirlwell C, Breeze CE, Teschendorff AE. A pan-tissue DNA methylation atlas enables in silico decomposition of human tissue methylomes at cell-type resolution. Nat Methods 2022 Mar;19(3):296. doi: 10.1038/s41592-022-01412-7 .