diff --git a/specs/protocol/igneous/overview.md b/specs/protocol/isthmus/overview.md
similarity index 94%
rename from specs/protocol/igneous/overview.md
rename to specs/protocol/isthmus/overview.md
index 54b80fc79..bf2800450 100644
--- a/specs/protocol/igneous/overview.md
+++ b/specs/protocol/isthmus/overview.md
@@ -1,4 +1,4 @@
-# Igneous Network Upgrade
+# Isthmus Network Upgrade
 
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