diff --git a/Dockerfile b/Dockerfile
index 97c8357..b17043a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM bioconductor/bioconductor_docker:devel
+FROM bioconductor/bioconductor_docker:3.20
 
 WORKDIR /home/rstudio