diff --git a/src/lineage/models/manifest/manifest_v4.rs b/src/lineage/models/manifest/manifest_v4.rs
deleted file mode 100644
index 77051fc..0000000
--- a/src/lineage/models/manifest/manifest_v4.rs
+++ /dev/null
@@ -1,52 +0,0 @@
-use std::collections::HashMap;
-
-use anyhow::Result;
-use serde::{Deserialize, Serialize};
-use serde_json::Value;
-
-use super::anchor::Anchor;
-use crate::lineage::models::{
-    graph::Graph, manifest::get_contexts_for_manifest, statements::Statement,
-};
-
-/// Version 4 of the lineage manifest format
-#[derive(Debug, Serialize, Deserialize, utoipa::ToSchema)]
-pub struct ManifestV4 {
-    /// Version string identifying this manifest format
-    pub version: String,
-    /// JSON-LD contexts mapping context URLs to their definitions
-    pub contexts: HashMap<String, Value>,
-    /// Collection of lineage graphs contained in this manifest
-    pub graphs: Vec<Graph>,
-    /// Binary data blobs referenced by statements, keyed by CID
-    pub blobs: HashMap<String, String>,
-    /// Optional anchor points for statements on external systems
-    #[serde(skip_serializing_if = "Option::is_none")]
-    pub anchors: Option<Vec<Anchor>>,
-}
-
-/// Generates a version 4 manifest from graphs and blobs
-pub async fn generate_manifest_v4(
-    include_context: bool,
-    graphs: Vec<Graph>,
-    blobs: HashMap<String, String>,
-) -> Result<ManifestV4> {
-    let contexts = if include_context {
-        let graph_statements: Vec<Statement> = graphs
-            .iter()
-            .filter_map(|g| g.statements.clone())
-            .flatten()
-            .collect();
-        get_contexts_for_manifest(&graph_statements)?
-    } else {
-        HashMap::new()
-    };
-
-    Ok(ManifestV4 {
-        version: String::from("4"),
-        contexts,
-        graphs,
-        blobs,
-        anchors: None,
-    })
-}
diff --git a/src/lineage/models/manifest/mod.rs b/src/lineage/models/manifest/mod.rs
index 124dde4..0d155cc 100644
--- a/src/lineage/models/manifest/mod.rs
+++ b/src/lineage/models/manifest/mod.rs
@@ -1,7 +1,5 @@
 /// Anchor models for recording statements on external systems
 pub mod anchor;
-/// Version 4 manifest format with graph support
-pub mod manifest_v4;
 
 use std::{
     collections::{HashMap, HashSet},