diff --git a/guix/build-system/r.scm b/guix/build-system/r.scm
index 2d328764b0..c8ec9abd0d 100644
--- a/guix/build-system/r.scm
+++ b/guix/build-system/r.scm
@@ -1,5 +1,5 @@
 ;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2015, 2017, 2018 Ricardo Wurmus <rekado@elephly.net>
+;;; Copyright © 2015, 2017, 2018, 2019, 2020 Ricardo Wurmus <rekado@elephly.net>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -59,7 +59,7 @@ (define* (bioconductor-uri name version #:optional type)
                          "/src/contrib/"
                          name "_" version ".tar.gz")
           ;; TODO: use %bioconductor-version from (guix import cran)
-          (string-append "https://bioconductor.org/packages/3.10"
+          (string-append "https://bioconductor.org/packages/3.11"
                          type-url-part
                          "/src/contrib/Archive/"
                          name "_" version ".tar.gz"))))
diff --git a/guix/import/cran.scm b/guix/import/cran.scm
index ad66a644ee..b822fbc0ae 100644
--- a/guix/import/cran.scm
+++ b/guix/import/cran.scm
@@ -141,9 +141,9 @@ (define* (maybe-inputs package-inputs #:optional (type 'inputs))
 (define %cran-url "https://cran.r-project.org/web/packages/")
 (define %bioconductor-url "https://bioconductor.org/packages/")
 
-;; The latest Bioconductor release is 3.10.  Bioconductor packages should be
+;; The latest Bioconductor release is 3.11.  Bioconductor packages should be
 ;; updated together.
-(define %bioconductor-version "3.10")
+(define %bioconductor-version "3.11")
 
 (define* (bioconductor-packages-list-url #:optional type)
   (string-append "https://bioconductor.org/packages/"