diff --git a/R/Rmath/build_tarballs.jl b/R/Rmath/build_tarballs.jl
index 49e18719ff3..fea77f630ba 100644
--- a/R/Rmath/build_tarballs.jl
+++ b/R/Rmath/build_tarballs.jl
@@ -1,21 +1,21 @@
 using BinaryBuilder
 
 name = "Rmath"
-version = v"0.2.2"
+version = v"0.3.0"
 
 sources = [
-    ArchiveSource("https://github.com/JuliaStats/Rmath-julia/archive/v$(version).tar.gz",
-                  "6544f40e51999469873b0f28d4bdeecdc847d4b24250a65027ae07e7dccb9ccd"),
+    GitSource("https://github.com/JuliaStats/Rmath-julia.git",
+              "c71948a8ce7b8b1aca7b94a3e97840bc06c51749"),
 ]
 
 script = raw"""
-cd $WORKSPACE/srcdir/Rmath-julia-*
+cd $WORKSPACE/srcdir/Rmath-julia*
 make -j${nproc}
 mkdir -p "${libdir}"
 mv src/libRmath-julia.* "${libdir}"
 """
 
-platforms = supported_platforms()
+platforms = supported_platforms(;experimental=true)
 
 products = [
     LibraryProduct("libRmath-julia", :libRmath),
@@ -23,4 +23,4 @@ products = [
 
 dependencies = Dependency[]
 
-build_tarballs(ARGS, name, version, sources, script, platforms, products, dependencies)
+build_tarballs(ARGS, name, version, sources, script, platforms, products, dependencies; julia_compat = "1.6")