diff --git a/Cargo.lock b/Cargo.lock
index 43f571c..68da857 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -112,7 +112,7 @@ dependencies = [
 
 [[package]]
 name = "cargo-acl"
-version = "0.3.0"
+version = "0.4.0"
 dependencies = [
  "addr2line",
  "anyhow",
diff --git a/Cargo.toml b/Cargo.toml
index f2ca7ba..16799ad 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "cargo-acl"
-version = "0.3.0"
+version = "0.4.0"
 edition = "2021"
 rust-version = "1.70"
 license = "MIT OR Apache-2.0"
@@ -54,4 +54,4 @@ incremental = false
 debug = 0
 
 [profile.release]
-strip = true
+#strip = true
diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index bb31ad9..945731f 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -1,3 +1,9 @@
+# Version 0.4.0
+* Now sandboxes rustc (and thus proc macros)
+* Config version bumped to 2 (enables sandboxing of rustc)
+* Fixed passing arguments via `cargo acl run`
+* Minimum supported Rust version bumped to 1.70
+
 # Version 0.3.0
 * Renamed to cargo-acl
 * UI now only activates when necessary.