diff --git a/firefox.spec b/firefox.spec
index a37d16f..7bd1ce0 100644
--- a/firefox.spec
+++ b/firefox.spec
@@ -259,7 +259,7 @@ BuildRequires:  xorg-x11-server-Xvfb
 %if 0%{?pgo_wayland}
 BuildRequires:  mutter
 %endif
-BuildRequires:  rust = 1.38
+BuildRequires:  rust
 BuildRequires:  cargo
 BuildRequires:  clang-devel