diff --git a/tests/testthat/test-2plotSeries.R b/tests/testthat/test-2plotSeries.R
index 817e3a03..b509ae04 100644
--- a/tests/testthat/test-2plotSeries.R
+++ b/tests/testthat/test-2plotSeries.R
@@ -4,7 +4,7 @@ test_that("plot series", {
     # Load data from miaTime package
     if( !require("miaTime") ){
         if( !require("devtools") ){
-            install.packages("devtools")
+            BiocManager::install("devtools")
         }
         devtools::install_github("microbiome/miaTime")
         library("miaTime")