diff --git a/etc/portage/package.mask/river b/etc/portage/package.mask/river
new file mode 100644
index 0000000..6e28449
--- /dev/null
+++ b/etc/portage/package.mask/river
@@ -0,0 +1,4 @@
+# /etc/portage/package.mask/river
+# Mask river 0.4 to remain in river classic
+
+>=gui-wm/river-0.4
diff --git a/etc/portage/package.mask/rust-bin b/etc/portage/package.mask/rust-bin
new file mode 100644
index 0000000..7781b9c
--- /dev/null
+++ b/etc/portage/package.mask/rust-bin
@@ -0,0 +1,4 @@
+# /etc/portage/package.mask/rust-bin
+# Mask rust-bin because it does not work on musl
+
+dev-lang/rust-bin*