diff --git a/anda/tools/shadowenv/anda.hcl b/anda/tools/shadowenv/anda.hcl
new file mode 100644
index 0000000000..45a58668de
--- /dev/null
+++ b/anda/tools/shadowenv/anda.hcl
@@ -0,0 +1,5 @@
+project pkg {
+	rpm {
+		spec = "shadowenv.spec"
+	}
+}
diff --git a/anda/tools/shadowenv/shadowenv.spec b/anda/tools/shadowenv/shadowenv.spec
new file mode 100644
index 0000000000..aabe4dbb51
--- /dev/null
+++ b/anda/tools/shadowenv/shadowenv.spec
@@ -0,0 +1,40 @@
+Name:           shadowenv
+Version:        3.5.0
+Release:        1%?dist
+License:        MIT
+Summary:        Reversible directory-local environment variable manipulations
+URL:            https://shopify.github.io/shadowenv/
+Source0:        https://github.com/Shopify/shadowenv/archive/refs/tags/%version.tar.gz
+BuildRequires:  cargo cargo-rpm-macros mold
+
+Packager:       Owen Zimmerman <owen@fyralabs.com>
+
+%description
+%summary.
+
+%prep
+%autosetup
+%cargo_prep_online
+
+%build
+%cargo_build
+
+%install
+mkdir -p %{buildroot}%{_mandir}/man1/
+mkdir -p %{buildroot}%{_mandir}/man5/
+install -Dm755 target/rpm/shadowenv  %{buildroot}%{_bindir}/shadowenv
+install -Dm644 man/man1/shadowenv.1  %{buildroot}%{_mandir}/man1/
+install -Dm644 man/man5/shadowlisp.5 %{buildroot}%{_mandir}/man5/
+%{cargo_license_online -a} > LICENSE.dependencies
+
+%files
+%doc README.md CONTRIBUTING.md
+%license LICENSE
+%license LICENSE.dependencies
+%{_bindir}/shadowenv
+%{_mandir}/man1/shadowenv.*.*
+%{_mandir}/man5/shadowlisp.*.*
+
+%changelog
+* Thu Jan 01 2026 Owen Zimmerman <owen@fyralabs.com>
+- Initial commit
diff --git a/anda/tools/shadowenv/update.rhai b/anda/tools/shadowenv/update.rhai
new file mode 100644
index 0000000000..9f53d58ae5
--- /dev/null
+++ b/anda/tools/shadowenv/update.rhai
@@ -0,0 +1 @@
+rpm.version(gh_tag("Shopify/shadowenv"));