diff --git a/docs/spec/overview.md b/docs/spec/overview.md
index 0fec260e9b6d187ba790b8dcfeaf83dde4d7d07b..41d5658f5c02618c9d8ce6fff657f0ca04b82a0a 100644
--- a/docs/spec/overview.md
+++ b/docs/spec/overview.md
@@ -12,4 +12,5 @@ Please view the following documents (in roughly this order):
 2. definitions.md
 3. statements.md
 4. expressions.md
-5. validation.md
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+5. validation.md
+6. types.md
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