diff --git a/.github/workflows/pkgdown.yaml b/.github/workflows/pkgdown.yaml
index 9eebcb3..dfa8831 100644
--- a/.github/workflows/pkgdown.yaml
+++ b/.github/workflows/pkgdown.yaml
@@ -14,7 +14,7 @@ name: pkgdown
 jobs:
   pkgdown:
     runs-on: ubuntu-latest
-    container: bioconductor/bioconductor_docker:devel
+    container: bioconductor/bioconductor_docker:RELEASE_3_18
     env:
       GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
 
@@ -35,7 +35,7 @@ jobs:
       - name: Install package
         run: R CMD INSTALL .
 
-      - name: Build site 
+      - name: Build site
         run: pkgdown::build_site_github_pages(new_process = FALSE, install = FALSE)
         shell: Rscript {0}
 
diff --git a/.gitignore b/.gitignore
index 391c362..e523310 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,4 @@ inst/doc
 docs
 log*
 bugphyzz*tsv
+inst/picrust/venv
diff --git a/DESCRIPTION b/DESCRIPTION
index d1db763..8dc8500 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -18,7 +18,12 @@ Suggests:
     rmarkdown,
     tibble,
     sessioninfo,
-    ggplot2
+    ggplot2,
+    gtable,
+    ggtree,
+    ggpubr,
+    reshape2,
+    ggimage
 Imports:
     ape,
     BiocFileCache,