diff --git a/NEWS.md b/NEWS.md
index ff429715..b5c7b6dc 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -10,6 +10,7 @@
 * `use_extendr()` correctly handles calls with `path` not equal to  `"."` (current folder), or when there is no active `{usethis}` project (#323).
 * Fixes an issue in pre-defined set of known features: added `either` (#338)
 * `create_extendr_package()` allows user to create project directory using RStudio's **Project Command**. (#321)
+* Support `RTOOLS44` (#347)
 
 # rextend 0.3.1
 
diff --git a/R/source.R b/R/source.R
index 350fb8f9..8cc564cf 100644
--- a/R/source.R
+++ b/R/source.R
@@ -314,7 +314,11 @@ invoke_cargo <- function(toolchain, specific_target, dir, profile,
         cli::cli_abort("rextendr currently supports R 4.x", class = "rextendr_error")
       }
 
-      if (package_version(R.version$minor) >= "3.0") {
+      minor_patch <- package_version(R.version$minor)
+
+      if (minor_patch >= "4.0") {
+        rtools_version <- "44" # nolint: object_usage_linter
+      } else if (minor_patch >= "3.0") {
         rtools_version <- "43" # nolint: object_usage_linter
       } else {
         rtools_version <- "42" # nolint: object_usage_linter