diff --git a/misc/prepare-release.py b/misc/prepare-release.py
new file mode 100644
index 00000000..e81417b8
--- /dev/null
+++ b/misc/prepare-release.py
@@ -0,0 +1,70 @@
+#!/usr/bin/python3
+from datetime import datetime
+import os
+import re
+import sys
+
+if len(sys.argv) != 2:
+    print("Usage: prepare-release.py <version>")
+    sys.exit(1)
+
+version = sys.argv[1]
+
+print("Updating CHANGELOG...")
+
+with open("CHANGELOG.md", "r") as changelog_file:
+    changelog = changelog_file.read()
+
+    changelog = re.sub(
+        r"## \[Unreleased\]\((.+)\)$",
+        f"## [Unreleased](https://github.com/Kampfkarren/selene/compare/{version}...HEAD)\n\n"
+        f"## [{version}](https://github.com/Kampfkarren/selene/releases/tag/{version}) - {datetime.today().strftime('%Y-%m-%d')}",
+        changelog,
+        0,
+        re.MULTILINE
+    )
+
+with open("CHANGELOG.md", "w") as changelog_file:
+    changelog_file.write(changelog)
+
+print("Updating root Cargo.toml...")
+
+with open("Cargo.toml", "r") as cargo_file:
+    cargo = cargo_file.read()
+
+    cargo = re.sub(
+        r"version = \"(.+)\"",
+        f"version = \"{version}\"",
+        cargo,
+        0,
+        re.MULTILINE
+    )
+
+with open("Cargo.toml", "w") as cargo_file:
+    cargo_file.write(cargo)
+
+print("Updating selene/Cargo.toml...")
+
+with open("selene/Cargo.toml", "r") as cargo_file:
+    selene_cargo = cargo_file.read()
+
+    selene_cargo = re.sub(
+        r"^(selene-lib = .+version = \")(=.+?)\"",
+        f"\\1={version}\"",
+        selene_cargo,
+        0,
+        re.MULTILINE
+    )
+
+with open("selene/Cargo.toml", "w") as cargo_file:
+    cargo_file.write(selene_cargo)
+
+print("Running cargo check...")
+
+os.system("cargo check")
+
+print("------")
+
+print("Done. Next steps:")
+print("- Make and push a commit with [release]")
+print("- cargo publish")