diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6dda409..3c58d35 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+**v1.3.1:**
+
+* Fixed bug in generating PDFs of RMarkdown files in `ottr::export`
+
+**v1.3.0:**
+
+* Added support for exporting PDFs in zip files created by `ottr:export`
+
 **v1.2.0:**
 
 * Refactored structure of the package
diff --git a/DESCRIPTION b/DESCRIPTION
index 85aed29..64b028f 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,6 +1,6 @@
 Package: ottr
 Title: An R Autograding Extension for Otter-Grader
-Version: 1.3.0
+Version: 1.3.1
 Authors@R: c(
     person(given = "Christopher",
            family = "Pyles",
@@ -16,7 +16,7 @@ Description:
 License: BSD_3_clause + file LICENSE
 Encoding: UTF-8
 Roxygen: list(markdown = TRUE)
-RoxygenNote: 7.2.1
+RoxygenNote: 7.2.3
 Depends:
     R (>= 4.0.0)
 Imports:
diff --git a/NAMESPACE b/NAMESPACE
index a6cee70..df94e02 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -5,3 +5,5 @@ export(check)
 export(export)
 export(run_autograder)
 export(valid_syntax)
+importFrom(R6,R6Class)
+importFrom(jsonlite,toJSON)
diff --git a/R/GradingResults.R b/R/GradingResults.R
index f870ab7..d1a50d9 100644
--- a/R/GradingResults.R
+++ b/R/GradingResults.R
@@ -44,6 +44,8 @@ GradingResults <- R6::R6Class(
 
     #' @description Export these results to a JSON string.
     #'
+    #' @importFrom jsonlite toJSON
+    #'
     #' @return The JSON string
     to_json = function() {
       return(jsonlite::toJSON(self$to_list(), auto_unbox = TRUE, pretty = TRUE, null = "null"))
diff --git a/R/TestCase.R b/R/TestCase.R
index e332b6f..f27bc68 100644
--- a/R/TestCase.R
+++ b/R/TestCase.R
@@ -9,6 +9,8 @@
 #' @field success_message A message to show to students if the test passes
 #' @field failure_message A message to show to students if the test fails
 #'
+#' @importFrom R6 R6Class
+#'
 #' @export
 #'
 #' @examples
diff --git a/R/export.R b/R/export.R
index 6390b99..17adb92 100644
--- a/R/export.R
+++ b/R/export.R
@@ -45,7 +45,7 @@ export <- function(submission_path, export_path = NULL, display_link = TRUE, pdf
         readLines(submission_path))
       writeLines(contents, new_subm_path)
 
-      rmarkdown::render(new_subm_path, "pdf_document", pdf_path)
+      rmarkdown::render(new_subm_path, "pdf_document", pdf_path, dirname(submission_path))
       file.remove(new_subm_path)
     } else {
       stop("Only Rmd and ipynb files can be converted to PDFs")
@@ -63,7 +63,7 @@ export <- function(submission_path, export_path = NULL, display_link = TRUE, pdf
 
   file.remove(zip_filename_file_name)
 
-  if (display_link) {
+  if (display_link && Sys.getenv("RSTUDIO") != "1") {
     IRdisplay::display_html(sprintf("
     <p>Your submission has been exported. Click <a href='%s' download='%s'
     target='_blank'>here</a> to download the zip file.</p>
diff --git a/tests/testthat/test_export.R b/tests/testthat/test_export.R
index 1825859..8691cab 100644
--- a/tests/testthat/test_export.R
+++ b/tests/testthat/test_export.R
@@ -100,5 +100,5 @@ test_that("supports PDF exports for Rmd files", {
 
   # check that IRdisplay::display_html was called
   expect_called(mock_render, 1)
-  expect_args(mock_render, 1, tempfile_path, "pdf_document", pdf_path)
+  expect_args(mock_render, 1, tempfile_path, "pdf_document", pdf_path, dirname(subm_path))
 })