diff --git a/.github/workflows/check-bioc.yml b/.github/workflows/check-bioc.yml
index ff9f936..864d79b 100644
--- a/.github/workflows/check-bioc.yml
+++ b/.github/workflows/check-bioc.yml
@@ -53,10 +53,10 @@ jobs:
       matrix:
         config:
           # This needs to be updated after each Bioconductor release. Please make sure we have the matching R and Bioc versions in it. 
-          - { os: ubuntu-latest, r: '4.3', bioc: '3.18', cont: "bioconductor/bioconductor_docker:RELEASE_3_18", rspm: "https://packagemanager.rstudio.com/cran/__linux__/focal/latest" }
-          - { os: ubuntu-latest, r: 'next', bioc: '3.19', cont: "bioconductor/bioconductor_docker:devel", rspm: "https://packagemanager.rstudio.com/cran/__linux__/focal/latest" }
-          - { os: macOS-latest, r: '4.4', bioc: '3.19'}
-          - { os: windows-latest, r: '4.4', bioc: '3.19'}
+          - { os: ubuntu-latest, r: '4.4', bioc: '3.20', cont: "bioconductor/bioconductor_docker:RELEASE_3_19", rspm: "https://packagemanager.rstudio.com/cran/__linux__/focal/latest" }
+          - { os: ubuntu-latest, r: 'next', bioc: '3.21', cont: "bioconductor/bioconductor_docker:devel", rspm: "https://packagemanager.rstudio.com/cran/__linux__/focal/latest" }
+          - { os: macOS-latest, r: '4.4', bioc: '3.20'}
+          - { os: windows-latest, r: '4.4', bioc: '3.20'}
           ## Check https://github.com/r-lib/actions/tree/master/examples
           ## for examples using the http-user-agent
     env:
diff --git a/R/method-plot.R b/R/method-plot.R
index b82c28a..39368b2 100644
--- a/R/method-plot.R
+++ b/R/method-plot.R
@@ -57,6 +57,8 @@
 #'             Default is NULL (using transcriptome-wide FDR corrected pvalues).
 #' @param chr The chromosomes to be displayed in the \code{plotManhattan} 
 #'             function. Default is \code{NULL}, i.e. all chromosomes are shown. 
+#' @param highlight.label.size Size of the label of the highlighted genes to be 
+#'             displayed in the \code{plotManhattan}. Default value is 5.
 #### Graphical parameters
 #' @param main Title for the plot, if missing a default title will be used.
 #' @param groups A character vector containing either group assignments of
diff --git a/man/plotFunctions.Rd b/man/plotFunctions.Rd
index d1c144b..f5caf65 100644
--- a/man/plotFunctions.Rd
+++ b/man/plotFunctions.Rd
@@ -174,7 +174,8 @@ plotSizeFactors(ods, basePlot = TRUE)
   subsetName = NULL,
   chrColor = c("black", "darkgrey"),
   padjCutoff = 0.05,
-  zScoreCutoff = 0
+  zScoreCutoff = 0, 
+  highlight.label.size = 5
 )
 }
 \arguments{
@@ -288,7 +289,11 @@ features that are shown in the manhattan plot.}
 \item{chrColor}{A vector of length 2 giving the two colors used for 
 coloring alternating chromosomes in the manhattan plot. Default 
 colors are 'black' and 'darkgrey'.}
+
+\item{highlight.label.size}{Size of the label of the highlighted genes.
+Default value is 5.}
 }
+
 \value{
 If base R graphics are used nothing is returned else the plotly or
             the gplot object is returned.