diff --git a/DESCRIPTION b/DESCRIPTION
index c2e3a8d..fd664db 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,6 +1,6 @@
 Package: antigen.garnish
 Title: Tumor neoantigen prediction
-Version: 2.3.0
+Version: 2.3.1
 Authors@R:
     c(person(given = c("Lee", "P."),
              family = "Richman",
diff --git a/NEWS.md b/NEWS.md
index f8ebd86..4ec2010 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,3 +1,9 @@
+# antigen.garnish 2.3.1
+
+Bugfix:
+
+- errors parsing rare MHCII alleles for netMHC tools
+
 # antigen.garnish 2.3.0
 
 Bugfix:
diff --git a/README.md b/README.md
index 082a43a..0550966 100644
--- a/README.md
+++ b/README.md
@@ -26,9 +26,9 @@ Two methods exist to run `antigen.garnish`:
 ### Docker
 
 ```sh
-docker pull andrewrech/antigen.garnish:2.3.0
+docker pull andrewrech/antigen.garnish:2.3.1
 
-cID=$(docker run -it -d andrewrech/antigen.garnish:2.3.0 /bin/bash)
+cID=$(docker run -it -d andrewrech/antigen.garnish:2.3.1 /bin/bash)
 ```
 
 [Download](https://services.healthtech.dtu.dk/software.php) netMHC binaries (academic license): NetMHC 4.0, NetMHCpan 4.1b, NetMHCII 2.3, NetMHCIIpan 4.0.
diff --git a/antigen.garnish.pdf b/antigen.garnish.pdf
new file mode 100644
index 0000000..ea6afdf
Binary files /dev/null and b/antigen.garnish.pdf differ
diff --git a/inst/extdata/src/antigen.garnish.flowchart.R b/inst/extdata/src/antigen.garnish.flowchart.R
deleted file mode 100755
index 0142016..0000000
--- a/inst/extdata/src/antigen.garnish.flowchart.R
+++ /dev/null
@@ -1,29 +0,0 @@
-   antigen.garnish_flowchart <- glue::glue("digraph boxes_and_circles {{
-
-          graph [overlap = true, bgcolor = transparent, rankdir = LR]
-
-          node [margin = 0.2, shape = box, fontsize = 18, fontname = '{Font}', fontcolor = '#000000', color = '#000000', fillcolor = '#82b1ff:#8c9eff', style = radial]
-
-            input [label = 'Somatic variants\n(VCF file)\nor peptides']
-            epi [label = 'Top predicted\nneoepitopes']
-
-          node [margin = 0.2, face = bold, shape = box, fontname = '{Font}', fontcolor = '#000000', fontsize = 22, color = '#000000', fillcolor = '#ffd180:#ff9100', style = radial]
-
-            ag [label = 'antigen.garnish']
-
-          input -> ag -> epi
-
-          edge [penwidth = 1.5, color = '#000000', arrowsize = 1]
-
-          }}")
-
-        antigen.garnish_flowchart %<>% DiagrammeR::grViz(.)
-        write(DiagrammeRsvg::export_svg(antigen.garnish_flowchart),
-          file = paste0(
-            DROPBOX,
-            "S3/antigen.garnish_flowchart.svg"
-          ),
-          ncolumns = 1,
-          append = FALSE,
-          sep = " "
-        )
diff --git a/inst/extdata/src/antigen.garnish_transcript_db.R b/inst/extdata/src/antigen.garnish_transcript_db.R
index 0f20d31..97f32e4 100755
--- a/inst/extdata/src/antigen.garnish_transcript_db.R
+++ b/inst/extdata/src/antigen.garnish_transcript_db.R
@@ -114,7 +114,7 @@ make_refseq_db <- function(txt) {
   1:length(l) %>% lapply(function(i) {
     print(i)
     ids <- l[[i]] %>% paste(collapse = ",")
-    glue::glue("http 'https://eutils.ncbi.nlm.nih.gov/entrez/eutils/efetch.fcgi?db=nuccore&id={ids}&retmode=xml' > rs{i}.xml") %>% system()
+    paste0("http 'https://eutils.ncbi.nlm.nih.gov/entrez/eutils/efetch.fcgi?db=nuccore&id=", ids, "&retmode=xml' > rs", i, ".xml") %>% system()
   })
 
   # extract RefSeq IDm cDNA,  and peptide sequence from .xml
@@ -140,7 +140,7 @@ make_refseq_db <- function(txt) {
 
           sub <- x %>%
             # move to sequence record ancestor corresponding to transcript ID
-            xml2::xml_find_all(glue::glue("//GBSeq_accession-version[text()='{id}']/ancestor::GBSeq"))
+            xml2::xml_find_all(paste0("//GBSeq_accession-version[text()='", id, "']/ancestor::GBSeq"))
 
           peptide <- sub %>%
             # find translation entry