diff --git a/src/Makevars.ucrt b/src/Makevars.ucrt
new file mode 100644
index 0000000000..1a2e10137d
--- /dev/null
+++ b/src/Makevars.ucrt
@@ -0,0 +1,2 @@
+CRT=-ucrt
+include Makevars.win
diff --git a/src/Makevars.win b/src/Makevars.win
index 46a6a6c1c0..0ead05a33b 100644
--- a/src/Makevars.win
+++ b/src/Makevars.win
@@ -4,7 +4,7 @@ RWINLIB = ../windows/rwinlib-tiledb
 PKG_CPPFLAGS = -I../inst/include -I$(RWINLIB)/include -DTILEDB_STATIC_DEFINE
 PKG_LIBS = \
 	-L$(RWINLIB)/lib$(subst gcc,,$(COMPILED_BY))$(R_ARCH) \
-	-L$(RWINLIB)/lib$(R_ARCH) \
+	-L$(RWINLIB)/lib$(R_ARCH)$(CRT) \
 	-ltiledbstatic -lbz2 -lzstd -llz4 -lz \
 	-laws-cpp-sdk-identity-management -laws-cpp-sdk-cognito-identity -laws-cpp-sdk-sts -laws-cpp-sdk-s3 -laws-cpp-sdk-core -laws-c-event-stream -laws-checksums -laws-c-common \
 	-lShlwapi -lBcrypt -lRpcrt4 -lWininet -lWinhttp -lws2_32 -lVersion -lUserenv