diff --git a/internal/lsp/cache/cache.go b/internal/lsp/cache/cache.go
index 5e6180d..6d40ecb 100644
--- a/internal/lsp/cache/cache.go
+++ b/internal/lsp/cache/cache.go
@@ -59,6 +59,10 @@
 	err     error
 }
 
+func (h *fileHandle) Saved() bool {
+	return true
+}
+
 func (c *Cache) GetFile(ctx context.Context, uri span.URI) (source.FileHandle, error) {
 	return c.getFile(ctx, uri)
 }
diff --git a/internal/lsp/cache/session.go b/internal/lsp/cache/session.go
index 43516b7..e1d43de 100644
--- a/internal/lsp/cache/session.go
+++ b/internal/lsp/cache/session.go
@@ -106,6 +106,10 @@
 	}
 }
 
+func (c *closedFile) Saved() bool {
+	return true
+}
+
 func (c *closedFile) Session() string {
 	return ""
 }
diff --git a/internal/lsp/cache/snapshot.go b/internal/lsp/cache/snapshot.go
index 3e35ca7..9cce32b 100644
--- a/internal/lsp/cache/snapshot.go
+++ b/internal/lsp/cache/snapshot.go
@@ -1415,7 +1415,10 @@
 	}
 	// If a go.mod in the workspace has been changed, invalidate metadata.
 	if kind := originalFH.Kind(); kind == source.Mod {
-		return source.InDir(filepath.Dir(s.view.rootURI.Filename()), filepath.Dir(originalFH.URI().Filename()))
+		if !source.InDir(filepath.Dir(s.view.rootURI.Filename()), originalFH.URI().Filename()) {
+			return false
+		}
+		return currentFH.Saved()
 	}
 	// Get the original and current parsed files in order to check package name
 	// and imports. Use the new snapshot to parse to avoid modifying the
diff --git a/internal/lsp/source/view.go b/internal/lsp/source/view.go
index cc7b207..89f4c6a 100644
--- a/internal/lsp/source/view.go
+++ b/internal/lsp/source/view.go
@@ -306,9 +306,6 @@
 // Overlay is the type for a file held in memory on a session.
 type Overlay interface {
 	VersionedFileHandle
-
-	// Saved returns whether this overlay has been saved to disk.
-	Saved() bool
 }
 
 // FileModification represents a modification to a file.
@@ -438,6 +435,8 @@
 	// Read reads the contents of a file.
 	// If the file is not available, returns a nil slice and an error.
 	Read() ([]byte, error)
+	// Saved reports whether the file has the same content on disk.
+	Saved() bool
 }
 
 // FileIdentity uniquely identifies a file at a version from a FileSystem.