Index: salsa/Cargo.toml
===================================================================
--- salsa.orig/Cargo.toml
+++ salsa/Cargo.toml
@@ -22,7 +22,7 @@ version = "0.8"
 default-features = false
 
 [dependencies.indexmap]
-version = "1.0.1"
+version = "2"
 
 [dependencies.lock_api]
 version = "0.4"
