diff --git a/Makefile b/Makefile
index 0cf61e6..2532fff 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,11 @@
 .PHONY: deps pre-commit test reset-version
 
+UNAME_S := $(shell uname -s)
+ifeq ($(UNAME_S),Darwin)
+	SED_INPLACE := sed -i ''
+else
+	SED_INPLACE := sed -i
+endif
 
 deps:
 	@echo "=== Install dependencies ==="
@@ -18,7 +24,7 @@ test: deps pre-commit
 reset-version:
 	@echo "=== Resetting version numbers to 0.0.1 ==="
 	# Only update the version field in pyproject.toml
-	sed -i -E 's/^(version = ")([0-9]+\.[0-9]+\.[0-9]+)(")/\1 0.0.1\3/' pyproject.toml
+	$(SED_INPLACE) -E 's/^(version = ")([0-9]+\.[0-9]+\.[0-9]+)(")/\10.0.1\3/' pyproject.toml
 	# Update version numbers in .py files
-	find . -type f -name '*.py' -exec sed -i -E 's/[0-9]+\.[0-9]+\.[0-9]+/0.0.1/g' {} +
+	find . -type f -name '*.py' -exec $(SED_INPLACE) -E 's/[0-9]+\.[0-9]+\.[0-9]+/0.0.1/g' {} +
 	@echo "--- Version numbers reset to 0.0.1 ---"