diff --git a/DESCRIPTION b/DESCRIPTION
index 21db37f14..bb34747d5 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -65,7 +65,7 @@ Config/needs/dependencies:
     curl,
     filelock,
     jsonlite,
-    pkgbuild,
+    r-lib/pkgbuild,
     pkgcache,
     r-lib/pkgdepends,
     pkgsearch,
diff --git a/src/library/pkgbuild/DESCRIPTION b/src/library/pkgbuild/DESCRIPTION
index 00f22cc2d..cf4a92dfd 100644
--- a/src/library/pkgbuild/DESCRIPTION
+++ b/src/library/pkgbuild/DESCRIPTION
@@ -1,6 +1,6 @@
 Package: pkgbuild
 Title: Find Tools Needed to Build R Packages
-Version: 1.4.3
+Version: 1.4.3.9000
 Authors@R: c(
     person("Hadley", "Wickham", role = "aut"),
     person("Jim", "Hester", role = "aut"),
@@ -20,13 +20,12 @@ Suggests: covr, cpp11, knitr, mockery, Rcpp, rmarkdown, testthat (>=
 Config/Needs/website: tidyverse/tidytemplate
 Config/testthat/edition: 3
 Encoding: UTF-8
+Roxygen: list(markdown = TRUE)
 RoxygenNote: 7.2.3
 NeedsCompilation: no
-Packaged: 2023-12-10 13:32:36 UTC; gaborcsardi
+Packaged: 2024-03-17 13:54:24 UTC; gaborcsardi
 Author: Hadley Wickham [aut],
   Jim Hester [aut],
   Gábor Csárdi [aut, cre],
   Posit Software, PBC [cph, fnd]
 Maintainer: Gábor Csárdi <csardi.gabor@gmail.com>
-Repository: CRAN
-Date/Publication: 2023-12-10 14:00:06 UTC
diff --git a/src/library/pkgbuild/NEWS.md b/src/library/pkgbuild/NEWS.md
index 40881c186..d96121f51 100644
--- a/src/library/pkgbuild/NEWS.md
+++ b/src/library/pkgbuild/NEWS.md
@@ -1,3 +1,7 @@
+# pkgbuild (development version)
+
+* pkgbuild now supports R 4.4.x and Rtools44 (#183).
+
 # pkgbuild 1.4.3
 
 * pkgbuild now does not need the crayon, rprojroot and prettyunits
diff --git a/src/library/pkgbuild/R/rtools.R b/src/library/pkgbuild/R/rtools.R
index b6d7228ab..bd6a5bcf4 100644
--- a/src/library/pkgbuild/R/rtools.R
+++ b/src/library/pkgbuild/R/rtools.R
@@ -30,6 +30,45 @@ has_rtools <- function(debug = FALSE) {
     return(FALSE)
   }
 
+  # R 4.4.0 or later on ARM64
+  if (getRversion() >= "4.4.0" && grepl("aarch", R.version$platform)) {
+    rtools44_aarch64_home <- Sys.getenv("RTOOLS44_AARCH64_HOME", "C:\rtools44-aarch64")
+    if (file.exists(file.path(rtools44_aarch64_home, "usr", "bin"))) {
+      if (debug) {
+        cat("Found in Rtools 4.4 (aarch64) installation folder\n")
+      }
+      rtools_path_set(rtools(rtools44_aarch64_home, "4.4"))
+      return(TRUE)
+    }
+    return(FALSE)
+  }
+
+  # R 4.4.0 or later
+  if (getRversion() >= "4.4.0") {
+    rtools44_home <- Sys.getenv("RTOOLS44_HOME", "C:\\rtools44")
+    if (file.exists(file.path(rtools44_home, "usr", "bin"))) {
+      if (debug) {
+        cat("Found in Rtools 4.4 installation folder\n")
+      }
+      rtools_path_set(rtools(rtools44_home, "4.4"))
+      return(TRUE)
+    }
+    return(FALSE)
+  }
+
+  # R 4.3.0 or later on ARM64
+  if (getRversion() >= "4.3.0" && grepl("aarch", R.version$platform)) {
+    rtools43_aarch64_home <- Sys.getenv("RTOOLS43_AARCH64_HOME", "C:\rtools43-aarch64")
+    if (file.exists(file.path(rtools43_aarch64_home, "usr", "bin"))) {
+      if (debug) {
+        cat("Found in Rtools 4.3 (aarch64) installation folder\n")
+      }
+      rtools_path_set(rtools(rtools43_aarch64_home, "4.3"))
+      return(TRUE)
+    }
+    return(FALSE)
+  }
+
   # R 4.3.0 or later
   if (getRversion() >= "4.3.0") {
     rtools43_home <- Sys.getenv("RTOOLS43_HOME", "C:\\rtools43")
@@ -43,7 +82,6 @@ has_rtools <- function(debug = FALSE) {
     return(FALSE)
   }
 
-
   # R 4.2.x or later and ucrt?
   ucrt <- is_ucrt()
   if (ucrt) {