diff --git a/Cargo.lock b/Cargo.lock
index 450533c3..0f3dc8eb 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1114,7 +1114,7 @@ dependencies = [
 [[package]]
 name = "ipld-core"
 version = "0.4.1"
-source = "git+https://github.com/ipld/rust-ipld-core?branch=primitives-as-trait#4ef5d7344881d0c6c0824f40922bd3f5163320b6"
+source = "git+https://github.com/ipld/rust-ipld-core?branch=integer-max-i64-feature#90adbf73b6472de56d13a7388c51da00844e8c1f"
 dependencies = [
  "cid",
  "serde",
diff --git a/Cargo.toml b/Cargo.toml
index 6f57c3a4..bb5f0be2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -33,7 +33,7 @@ bsky-sdk = { version = "0.1.6", path = "bsky-sdk" }
 async-trait = "0.1.80"
 
 # DAG-CBOR codec
-ipld-core = { version = "0.4.1", default-features = false, features = ["std"] }
+ipld-core = { version = "0.4.1", default-features = false, features = ["integer-max-i64"] }
 serde_ipld_dagcbor = { version = "0.6.0", default-features = false, features = ["std"] }
 
 # Parsing and validation
@@ -79,4 +79,4 @@ bumpalo = "~3.14.0"
 
 
 [patch.crates-io]
-ipld-core = { git = "https://github.com/ipld/rust-ipld-core", branch = "primitives-as-trait" }
+ipld-core = { git = "https://github.com/ipld/rust-ipld-core", branch = "integer-max-i64-feature" }
diff --git a/atrium-api/src/types.rs b/atrium-api/src/types.rs
index 42a1d89f..affcdccc 100644
--- a/atrium-api/src/types.rs
+++ b/atrium-api/src/types.rs
@@ -2,8 +2,7 @@
 //! <https://atproto.com/specs/data-model>
 
 use crate::error::Error;
-use ipld_core::cid::Cid;
-use ipld_core::ipld::{IpldGeneric, Primitives};
+use ipld_core::ipld::Ipld;
 use ipld_core::serde::to_ipld;
 use std::collections::BTreeMap;
 use std::fmt;
@@ -21,17 +20,6 @@ use string::RecordKey;
 #[derive(Clone)]
 pub struct PrimitivesI64;
 
-impl Primitives for PrimitivesI64 {
-    type Bool = bool;
-    type Integer = i64;
-    type Float = f64;
-    type String = String;
-    type Bytes = Vec<u8>;
-    type Link = Cid;
-}
-
-type Ipld = IpldGeneric<PrimitivesI64>;
-
 /// Trait for a collection of records that can be stored in a repository.
 ///
 /// The records all have the same Lexicon schema.