diff --git a/DESCRIPTION b/DESCRIPTION
index 768d88a..1354de8 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,7 +1,7 @@
 Type: Package
 Package: EpiCompare
 Title: Comparison, Benchmarking & QC of Epigenomic Datasets
-Version: 1.9.6
+Version: 1.9.7
 Authors@R: c(
     person(given = "Sera", family = "Choi", 
         email = "serachoi1230@gmail.com", 
diff --git a/R/plot_chromHMM.R b/R/plot_chromHMM.R
index dd7c4b0..7672d56 100644
--- a/R/plot_chromHMM.R
+++ b/R/plot_chromHMM.R
@@ -102,7 +102,7 @@ plot_chromHMM <- function(peaklist,
                                     fill = value)) +
     ggplot2::ylab("") +
     ggplot2::xlab("") +
-    ggplot2::scale_fill_viridis_b() +
+    ggplot2::scale_fill_viridis_c() +
     ggplot2::theme_minimal() +
     ggplot2::theme(axis.text = ggplot2::element_text(size = 11)) +
     ggplot2::theme(axis.text.x = ggplot2::element_text(angle = 315,
diff --git a/R/tidy_chromosomes.R b/R/tidy_chromosomes.R
index 8c94547..1da0f17 100644
--- a/R/tidy_chromosomes.R
+++ b/R/tidy_chromosomes.R
@@ -35,7 +35,7 @@
 #' @examples
 #' # make a GRanges
 #' chrom <- c("chr2", "chr3", "chrX", "chrY", "chrM", "junk")
-#' gr <- GRanges(seqnames = chrom,
+#' gr <- GenomicRanges::GRanges(seqnames = chrom,
 #'               ranges = IRanges(start = 2*(1:6), end = 3*(1:6)),
 #'               strand = "+",
 #'               seqinfo = Seqinfo(chrom))
diff --git a/README.md b/README.md
index 2a288be..17fbfc7 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,7 @@
 GPL-3](https://img.shields.io/badge/license-GPL--3-blue.svg)](https://cran.r-project.org/web/licenses/GPL-3)
 [![](https://img.shields.io/badge/doi-https://doi.org/10.1101/2022.07.22.501149-blue.svg)](https://doi.org/https://doi.org/10.1101/2022.07.22.501149)
 <br>
-[![](https://img.shields.io/badge/devel%20version-1.9.6-black.svg)](https://github.com/neurogenomics/EpiCompare)
+[![](https://img.shields.io/badge/devel%20version-1.9.7-black.svg)](https://github.com/neurogenomics/EpiCompare)
 [![](https://img.shields.io/github/languages/code-size/neurogenomics/EpiCompare.svg)](https://github.com/neurogenomics/EpiCompare)
 [![](https://img.shields.io/github/last-commit/neurogenomics/EpiCompare.svg)](https://github.com/neurogenomics/EpiCompare/commits/master)
 <br> [![R build
diff --git a/man/tidy_chromosomes.Rd b/man/tidy_chromosomes.Rd
index 0f48aaf..a4d0389 100644
--- a/man/tidy_chromosomes.Rd
+++ b/man/tidy_chromosomes.Rd
@@ -46,7 +46,7 @@ Standard chromosomes are defined using the
 \examples{
 # make a GRanges
 chrom <- c("chr2", "chr3", "chrX", "chrY", "chrM", "junk")
-gr <- GRanges(seqnames = chrom,
+gr <- GenomicRanges::GRanges(seqnames = chrom,
               ranges = IRanges(start = 2*(1:6), end = 3*(1:6)),
               strand = "+",
               seqinfo = Seqinfo(chrom))