diff --git a/.github/workflows/main.yaml b/.github/workflows/main.yaml
index c6b0cb2..0679d35 100644
--- a/.github/workflows/main.yaml
+++ b/.github/workflows/main.yaml
@@ -44,7 +44,7 @@ jobs:
           - macOS-13
     needs: build
     env:
-      IVERILOG_REF: f31d0dcbc5ddcd97e1e2e6f7bc7eb0f5a547fe16
+      IVERILOG_REF: ef7f0a8f38782dfc0872b1e352ccf32343c10bb8
     steps:
       - uses: actions/checkout@v4
       - name: Install Dependencies (macOS)
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5a7a6d3..3f5af1a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -26,6 +26,7 @@
 * Fixed unconverted multidimensional struct fields within dimension queries
 * Fixed non-typenames (e.g., from packages or subsequent declarations)
   improperly shadowing the names of `struct` pattern fields
+* Fixed shadowing of interface array indices passed to port connections
 * Fixed failure to resolve typenames suffixed with dimensions in contexts
   permitting both types and expressions, e.g., `$bits(T[W-1:0])`
 * Fixed errant constant folding of shadowed non-trivial localparams
diff --git a/src/Convert/Interface.hs b/src/Convert/Interface.hs
index 90d7cfa..b2be281 100644
--- a/src/Convert/Interface.hs
+++ b/src/Convert/Interface.hs
@@ -222,7 +222,10 @@ convertDescription tops parts (Part att ext Module lif name ports items) =
                 then Nothing
                 else Just (portName, modportBinding)
             where
-                modportBinding = (substitutions, replaceBit modportE)
+                modportBinding =
+                    ( substitutions
+                    , scopeExprWithScopes modports $ replaceBit modportE
+                    )
                 substitutions =
                     genSubstitutions modports base instanceE modportE
                 maybeInfo =
diff --git a/src/Convert/Scoper.hs b/src/Convert/Scoper.hs
index 51a14fa..f297311 100644
--- a/src/Convert/Scoper.hs
+++ b/src/Convert/Scoper.hs
@@ -38,6 +38,8 @@ module Convert.Scoper
     , replaceInExpr
     , scopeExpr
     , scopeType
+    , scopeExprWithScopes
+    , scopeTypeWithScopes
     , insertElem
     , removeElem
     , injectItem
@@ -209,6 +211,12 @@ scopeType = traverseNestedTypesM $ traverseTypeExprsM scopeExpr
 {-# INLINABLE scopeExpr #-}
 {-# INLINABLE scopeType #-}
 
+scopeExprWithScopes :: Scopes a -> Expr -> Expr
+scopeExprWithScopes scopes = flip evalState scopes . scopeExpr
+
+scopeTypeWithScopes :: Scopes a -> Type -> Type
+scopeTypeWithScopes scopes = flip evalState scopes . scopeType
+
 class ScopePath k where
     toTiers :: Scopes a -> k -> [Tier]