diff --git a/R/busy-indicators.R b/R/busy-indicators.R
index 026c1e541..e285bca74 100644
--- a/R/busy-indicators.R
+++ b/R/busy-indicators.R
@@ -220,7 +220,7 @@ spinnerOptions <- function(type = NULL, color = NULL, size = NULL, delay = NULL,
   if (!is.null(type)) {
     stopifnot(is.character(type) && length(type) == 1)
     if (file.exists(type) && grepl("\\.svg$", type)) {
-      typeRaw <- readBin(type, "raw", n = file.info(type)$size)
+      typeRaw <- readBin(type, "raw", n = file.size(type))
       url <- sprintf("url('data:image/svg+xml;base64,%s')", rawToBase64(typeRaw))
     } else {
       type <- rlang::arg_match(type, .busySpinnerTypes)
diff --git a/R/middleware.R b/R/middleware.R
index 385ce5301..834507bf5 100644
--- a/R/middleware.R
+++ b/R/middleware.R
@@ -226,7 +226,7 @@ staticHandler <- function(root) {
       return(NULL)
 
     content.type <- getContentType(abs.path)
-    response.content <- readBin(abs.path, 'raw', n=file.info(abs.path)$size)
+    response.content <- readBin(abs.path, 'raw', n=file.size(abs.path))
     return(httpResponse(200, content.type, response.content))
   })
 }
@@ -456,7 +456,7 @@ getResponseContentLength <- function(response, deleteOwnedContent) {
     if (deleteOwnedContent && isTRUE(response$content$owned)) {
       on.exit(unlink(response$content$file, recursive = FALSE, force = FALSE), add = TRUE)
     }
-    file.info(response$content$file)$size
+    file.size(response$content$file)
   } else {
     warning("HEAD request for unexpected content class ", class(response$content)[[1]])
     NULL
diff --git a/R/mock-session.R b/R/mock-session.R
index 5f0977511..fdb88a73d 100644
--- a/R/mock-session.R
+++ b/R/mock-session.R
@@ -344,7 +344,7 @@ MockShinySession <- R6Class(
     #' @param file The file to be encoded
     #' @param contentType The content type of the base64-encoded string
     fileUrl = function(name, file, contentType='application/octet-stream') {
-      bytes <- file.info(file)$size
+      bytes <- file.size(file)
       if (is.na(bytes))
         return(NULL)
 
diff --git a/R/reactives.R b/R/reactives.R
index 8d098c7f9..e8ce2a557 100644
--- a/R/reactives.R
+++ b/R/reactives.R
@@ -1965,7 +1965,7 @@ coerceToFunc <- function(x) {
 #'     # This function returns the time that log_file was last modified
 #'     checkFunc = function() {
 #'       if (file.exists(log_file))
-#'         file.info(log_file)$mtime[1]
+#'         file.mtime(log_file[1])
 #'       else
 #'         ""
 #'     },
@@ -2127,7 +2127,7 @@ reactiveFileReader <- function(intervalMillis, session, filePath, readFunc, ...)
     session = session,
     checkFunc = function() {
       path <- filePath()
-      info <- file.info(path)
+      info <- file.info(path, extra_cols = FALSE)
       return(paste(path, info$mtime, info$size))
     },
     valueFunc = function() {
diff --git a/R/shiny.R b/R/shiny.R
index d8cc2330c..dfa02e948 100644
--- a/R/shiny.R
+++ b/R/shiny.R
@@ -629,7 +629,7 @@ ShinySession <- R6Class(
             saveRDS(values, tmpfile)
             on.exit(unlink(tmpfile), add = TRUE)
 
-            content <- readBin(tmpfile, "raw", n = file.info(tmpfile)$size)
+            content <- readBin(tmpfile, "raw", n = file.size(tmpfile))
             httpResponse(200, "application/octet-stream", content)
 
           } else {
@@ -2096,7 +2096,7 @@ ShinySession <- R6Class(
     fileUrl = function(name, file, contentType='application/octet-stream') {
       "Return a URL for a file to be sent to the client. The file will be base64
       encoded and embedded in the URL."
-      bytes <- file.info(file)$size
+      bytes <- file.size(file)
       if (is.na(bytes))
         return(NULL)
 
diff --git a/R/shinyapp.R b/R/shinyapp.R
index 89d08fb0c..804470613 100644
--- a/R/shinyapp.R
+++ b/R/shinyapp.R
@@ -357,7 +357,7 @@ initAutoReloadMonitor <- function(dir) {
       files <- sort_c(
         list.files(dir, pattern = filePattern, recursive = TRUE, ignore.case = TRUE)
       )
-      times <- file.info(files)$mtime
+      times <- file.mtime(files)
       names(times) <- files
   
       if (is.null(lastValue)) {
diff --git a/R/test.R b/R/test.R
index bad1bf108..c220c70a0 100644
--- a/R/test.R
+++ b/R/test.R
@@ -38,7 +38,7 @@ is_legacy_shinytest_dir <- function(path){
   }
 
   files <- dir(path, full.names = TRUE)
-  files <- files[!file.info(files)$isdir]
+  files <- files[!file.info(files, extra_cols = FALSE)$isdir]
   if (length(files) == 0) {
     return(FALSE)
   }
diff --git a/R/utils.R b/R/utils.R
index e1d5e3d4c..0d4e208b1 100644
--- a/R/utils.R
+++ b/R/utils.R
@@ -252,7 +252,7 @@ find.file.ci <- function(...) {
 # The function base::dir.exists was added in R 3.2.0, but for backward
 # compatibility we need to add this function
 dirExists <- function(paths) {
-  file.exists(paths) & file.info(paths)$isdir
+  file.exists(paths) & file.info(paths, extra_cols = FALSE)$isdir
 }
 
 # Removes empty directory (vectorized). This is needed because file.remove()
@@ -803,7 +803,7 @@ cachedFuncWithFile <- function(dir, file, func, case.sensitive = FALSE) {
       file.path.ci(dir, file)
     }
 
-    now <- file.info(fname)$mtime
+    now <- file.mtime(fname)
     autoreload <- last_autoreload < cachedAutoReloadLastChanged$get()
     if (autoreload || !identical(last_mtime_file, now)) {
       value <<- func(fname, ...)
@@ -1329,7 +1329,7 @@ checkEncoding <- function(file) {
   # world of consistency (falling back to getOption('encoding') will not help
   # because native.enc is also normally UTF-8 based on *nix)
   if (!isWindows()) return('UTF-8')
-  size <- file.info(file)[, 'size']
+  size <- file.info(file, extra_cols = FALSE)[, 'size']
   if (is.na(size)) stop('Cannot access the file ', file)
   # BOM is 3 bytes, so if the file contains BOM, it must be at least 3 bytes
   if (size < 3L) return('UTF-8')
diff --git a/man/reactivePoll.Rd b/man/reactivePoll.Rd
index e5cf86ae6..2ba64def8 100644
--- a/man/reactivePoll.Rd
+++ b/man/reactivePoll.Rd
@@ -63,7 +63,7 @@ function(input, output, session) {
     # This function returns the time that log_file was last modified
     checkFunc = function() {
       if (file.exists(log_file))
-        file.info(log_file)$mtime[1]
+        file.mtime(log_file[1])
       else
         ""
     },
diff --git a/tests/testthat/test-plot-png.R b/tests/testthat/test-plot-png.R
index 54cae7fee..343d70e9f 100644
--- a/tests/testthat/test-plot-png.R
+++ b/tests/testthat/test-plot-png.R
@@ -1,6 +1,6 @@
 test_that("plotPNG()/startPNG() ignores NULL dimensions", {
   f <- plotPNG(function() plot(1), width = NULL, height = NULL)
   on.exit(unlink(f))
-  bits <- readBin(f, "raw", file.info(f)$size)
+  bits <- readBin(f, "raw", file.size(f))
   expect_gt(length(bits), 0)
 })