diff --git a/R/pkrt-list.R b/R/pkrt-list.R
index c1536c8..edc020e 100644
--- a/R/pkrt-list.R
+++ b/R/pkrt-list.R
@@ -10,7 +10,7 @@
 #' This function automatically discards duplicate and base packages. You can use
 #' `pkrt_list()` in combination with `renv::dependencies()` to cite all the
 #' packages used in a project or directory.
-#' @return A list of package citations.
+#' @returns A list of package citations with S3 class `pkrt_list`.
 #' @examples
 #' # Create a list of citations
 #' citations <- pkrt_list("pakret", "readr", "withr")
@@ -29,11 +29,17 @@ pkrt_list <- function(...) {
 }
 
 drop_base <- function(x) {
-  x[!x %in% get_base_pkgs()]
+  x[!x %in% base_pkgs()]
 }
 
-get_base_pkgs <- function() {
-  rownames(utils::installed.packages(.Library, priority = "base"))
+base_pkgs <- function() {
+  if (getRversion() >= "4.4.0") {
+    return(asNamespace("tools")$standard_package_names()[["base"]])
+  }
+  c(
+    "base", "compiler", "datasets", "graphics", "grDevices", "grid", "methods",
+    "parallel", "splines", "stats", "stats4", "tcltk", "tools", "utils"
+  )
 }
 
 itemize_citations <- function(pkgs) {
diff --git a/R/pkrt-set.R b/R/pkrt-set.R
index fd405d9..19b0ca8 100644
--- a/R/pkrt-set.R
+++ b/R/pkrt-set.R
@@ -13,6 +13,7 @@
 #' to alter pakret's behavior for a few specific citations only.
 #'
 #' Use `NULL` to reset a parameter to its default value.
+#' @returns This function is called for its side-effect. It returns no value.
 #' @examples
 #' pkrt_set(pkg = ":pkg (v. :ver) :ref")
 #' pkrt("pakret")
diff --git a/cran-comments.md b/cran-comments.md
index 858617d..6371687 100644
--- a/cran-comments.md
+++ b/cran-comments.md
@@ -1,3 +1,10 @@
+This is a resubmission.
+
+* I added a `value` section to `pkrt_set()`.
+* I specified the class of the output in `pkrt_list()`.
+* I removed `utils::installed.packages()` usage and replaced it with a more effecient alternative.
+* There's no particular references for the methods used in my package to add to the package description.
+
 ## R CMD check results
 
 0 errors | 0 warnings | 1 note
diff --git a/man/pkrt_list.Rd b/man/pkrt_list.Rd
index 6976c8f..2210e24 100644
--- a/man/pkrt_list.Rd
+++ b/man/pkrt_list.Rd
@@ -10,7 +10,7 @@ pkrt_list(...)
 \item{...}{Character vectors, separated by commas, of packages to cite.}
 }
 \value{
-A list of package citations.
+A list of package citations with S3 class \code{pkrt_list}.
 }
 \description{
 Creates a list of package citations that can be turned into a
diff --git a/man/pkrt_set.Rd b/man/pkrt_set.Rd
index 7da0838..c07af4f 100644
--- a/man/pkrt_set.Rd
+++ b/man/pkrt_set.Rd
@@ -10,6 +10,9 @@ pkrt_set(...)
 \item{...}{Key-value pairs, separated by commas, of parameters to set. See
 details.}
 }
+\value{
+This function is called for its side-effect. It returns no value.
+}
 \description{
 This function allows you to configure pakret's settings, e.g. to
 customize citation templates or control which \code{.bib} file to save