diff --git a/runtime/syntax/env.yaml b/runtime/syntax/env.yaml
new file mode 100644
index 00000000..b66f6c18
--- /dev/null
+++ b/runtime/syntax/env.yaml
@@ -0,0 +1,13 @@
+filetype: env
+
+detect:
+    filename: "\\.(env|envrc)$"
+
+rules:
+  - special: "."
+  - type: "[\\w]+="
+  - statement: "="
+  - comment:
+      start: "#"
+      end: "$"
+      rules: []