diff --git a/yjit/yjit.mk b/yjit/yjit.mk
index 80ca124699..c2553fc0bd 100644
--- a/yjit/yjit.mk
+++ b/yjit/yjit.mk
@@ -86,11 +86,13 @@ update-yjit-bench:
 	$(Q) $(tooldir)/git-refresh -C $(srcdir) --branch main \
 		https://github.com/Shopify/yjit-bench yjit-bench $(GIT_OPTS)
 
+RUST_VERSION = +1.58.0
+
 # Gives quick feedback about YJIT. Not a replacement for a full test run.
 .PHONY: yjit-smoke-test
 yjit-smoke-test:
 ifneq ($(strip $(CARGO)),)
-	$(CARGO) +1.58.0 test --all-features -q --manifest-path='$(top_srcdir)/yjit/Cargo.toml'
+	$(CARGO) $(RUST_VERSION) test --all-features -q --manifest-path='$(top_srcdir)/yjit/Cargo.toml'
 endif
 	$(MAKE) btest RUN_OPTS='--yjit-call-threshold=1' BTESTS=-j
 	$(MAKE) test-all TESTS='$(top_srcdir)/test/ruby/test_yjit.rb'