diff --git a/blockchain/blocks/Cargo.toml b/blockchain/blocks/Cargo.toml
index c9c8b5374b96..8bba5f661d2e 100644
--- a/blockchain/blocks/Cargo.toml
+++ b/blockchain/blocks/Cargo.toml
@@ -9,6 +9,7 @@ address = {path = "../../vm/address"}
 crypto = {path = "../../crypto"}
 message = {path = "../../vm/message"}
 clock = {path = "../../node/clock"}
-cid = "0.3.1"
+cid = {path = "../../ipld/cid"}
 multihash = "0.8.0"
 derive_builder = "0.9"
+serde_cbor = "0.11.0"
diff --git a/blockchain/blocks/src/block.rs b/blockchain/blocks/src/block.rs
index 056b5e5a4d2a..a7abd99b9c28 100644
--- a/blockchain/blocks/src/block.rs
+++ b/blockchain/blocks/src/block.rs
@@ -22,10 +22,6 @@ struct PoStCandidate {}
 struct PoStRandomness {}
 struct PoStProof {}
 
-fn template_cid() -> Cid {
-    Cid::new(Codec::DagCBOR, Version::V1, &[])
-}
-
 /// Header of a block
 ///
 /// Usage:
@@ -42,8 +38,8 @@ fn template_cid() -> Cid {
 ///     .weight(0) //optional
 ///     .epoch(ChainEpoch::default()) //optional
 ///     .messages(TxMeta::default()) //optional
-///     .message_receipts(Cid::new(Codec::DagCBOR, Version::V1, &[])) //optional
-///     .state_root(Cid::new(Codec::DagCBOR, Version::V1, &[])) //optional
+///     .message_receipts(Cid::default()) //optional
+///     .state_root(Cid::default()) //optional
 ///     .timestamp(0) //optional
 ///     .ticket(Ticket::default()) //optional
 ///     .build()
@@ -76,11 +72,11 @@ pub struct BlockHeader {
     pub messages: TxMeta,
 
     /// message_receipts is the Cid of the root of an array of MessageReceipts
-    #[builder(default = "template_cid()")]
+    #[builder(default)]
     pub message_receipts: Cid,
 
     /// state_root is a cid pointer to the state tree after application of the transactions state transitions
-    #[builder(default = "template_cid()")]
+    #[builder(default)]
     pub state_root: Cid,
 
     // CONSENSUS
@@ -98,7 +94,7 @@ pub struct BlockHeader {
 
     // CACHE
     /// stores the cid for the block after the first call to `cid()`
-    #[builder(default = "template_cid()")]
+    #[builder(default)]
     pub cached_cid: Cid,
     /// stores the hashed bytes of the block after the fist call to `cid()`
     #[builder(default)]
@@ -119,22 +115,12 @@ pub struct Block {
     secp_messages: SignedMessage,
 }
 
-/// Tracks the merkleroots of both secp and bls messages separately
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Default)]
 pub struct TxMeta {
     pub bls_messages: Cid,
     pub secp_messages: Cid,
 }
 
-impl Default for TxMeta {
-    fn default() -> Self {
-        Self {
-            bls_messages: template_cid(),
-            secp_messages: template_cid(),
-        }
-    }
-}
-
 /// ElectionPoStVerifyInfo seems to be connected to VRF
 /// see https://github.com/filecoin-project/lotus/blob/master/chain/sync.go#L1099
 struct ElectionPoStVerifyInfo {
diff --git a/blockchain/blocks/src/tipset.rs b/blockchain/blocks/src/tipset.rs
index 377c3b848dc1..7897edfb8a67 100644
--- a/blockchain/blocks/src/tipset.rs
+++ b/blockchain/blocks/src/tipset.rs
@@ -106,7 +106,7 @@ impl Tipset {
         // break ticket ties with the header CIDs, which are distinct
         sorted_headers.sort_by_key(|header| {
             let mut h = header.clone();
-            (h.ticket.vrfproof.clone(), h.cid().hash)
+            (h.ticket.vrfproof.clone(), h.cid().hash.clone())
         });
 
         // TODO
@@ -175,7 +175,7 @@ mod tests {
     use super::*;
     use crate::block::TxMeta;
     use address::Address;
-    use cid::{Cid, Codec, Version};
+    use cid::{Cid, Codec};
     use clock::ChainEpoch;
     use crypto::VRFResult;
 
@@ -184,7 +184,7 @@ mod tests {
 
     fn template_key(data: &[u8]) -> Cid {
         let h = multihash::encode(multihash::Hash::SHA2256, data).unwrap();
-        let cid = Cid::new(Codec::DagProtobuf, Version::V1, &h);
+        let cid = Cid::from_bytes_v1(Codec::DagCBOR, h);
         return cid;
     }
 
diff --git a/blockchain/chain/Cargo.toml b/blockchain/chain/Cargo.toml
index 09fd6c7ecb86..81a5f2e806c6 100644
--- a/blockchain/chain/Cargo.toml
+++ b/blockchain/chain/Cargo.toml
@@ -7,7 +7,7 @@ edition = "2018"
 [dependencies]
 blocks = {path = "../blocks"}
 network = {path = "../../node/network"}
-cid = "0.3.1"
+cid = {path = "../../ipld/cid"}
 clock = {path = "../../node/clock"}
 num-bigint = "0.2.3"
 
diff --git a/blockchain/chain/src/store/tip_index.rs b/blockchain/chain/src/store/tip_index.rs
index 1fa04b242a79..9577dd9d4eb2 100644
--- a/blockchain/chain/src/store/tip_index.rs
+++ b/blockchain/chain/src/store/tip_index.rs
@@ -102,7 +102,7 @@ mod tests {
     use super::*;
     use address::Address;
     use blocks::{BlockHeader, Ticket, Tipset, TxMeta};
-    use cid::{Cid, Codec, Version};
+    use cid::{Cid, Codec};
     use clock::ChainEpoch;
     use crypto::VRFResult;
 
@@ -111,7 +111,7 @@ mod tests {
 
     fn template_key(data: &[u8]) -> Cid {
         let h = multihash::encode(multihash::Hash::SHA2256, data).unwrap();
-        Cid::new(Codec::DagProtobuf, Version::V1, &h)
+        Cid::from_bytes_v1(Codec::DagCBOR, &h)
     }
 
     // key_setup returns a vec of distinct CIDs
diff --git a/blockchain/sync_manager/Cargo.toml b/blockchain/sync_manager/Cargo.toml
index e3e8d71344da..9cfefd2640f4 100644
--- a/blockchain/sync_manager/Cargo.toml
+++ b/blockchain/sync_manager/Cargo.toml
@@ -9,4 +9,4 @@ address = {path = "../../vm/address"}
 blocks = {path = "../blocks"}
 
 [dev-dependencies]
-cid = "0.3.1"
+cid = {path = "../../ipld/cid"}
diff --git a/blockchain/sync_manager/src/bucket.rs b/blockchain/sync_manager/src/bucket.rs
index 7746eeb67cf2..d6b296ef7f2f 100644
--- a/blockchain/sync_manager/src/bucket.rs
+++ b/blockchain/sync_manager/src/bucket.rs
@@ -74,11 +74,11 @@ mod tests {
     use super::*;
     use address::Address;
     use blocks::{BlockHeader, TipSetKeys};
-    use cid::{Cid, Codec, Version};
+    use cid::{Cid, Codec};
 
     fn create_header(weight: u64, parent_bz: &[u8], cached_bytes: &[u8]) -> BlockHeader {
         let x = TipSetKeys {
-            cids: vec![Cid::new(Codec::DagCBOR, Version::V1, parent_bz)],
+            cids: vec![Cid::from_bytes_v1(Codec::DagCBOR, parent_bz)],
         };
         BlockHeader::builder()
             .parents(x)
diff --git a/blockchain/sync_manager/tests/manager_test.rs b/blockchain/sync_manager/tests/manager_test.rs
index 16102efd6644..b06272d436aa 100644
--- a/blockchain/sync_manager/tests/manager_test.rs
+++ b/blockchain/sync_manager/tests/manager_test.rs
@@ -3,12 +3,12 @@
 
 use address::Address;
 use blocks::{BlockHeader, TipSetKeys, Tipset};
-use cid::{Cid, Codec, Version};
+use cid::{Cid, Codec};
 use sync_manager::SyncManager;
 
 fn create_header(weight: u64, parent_bz: &[u8], cached_bytes: &[u8]) -> BlockHeader {
     let x = TipSetKeys {
-        cids: vec![Cid::new(Codec::DagCBOR, Version::V1, parent_bz)],
+        cids: vec![Cid::from_bytes_v1(Codec::DagCBOR, parent_bz)],
     };
     BlockHeader::builder()
         .parents(x)
diff --git a/encoding/Cargo.toml b/encoding/Cargo.toml
index 8fd50e72ee7e..5ef9e483e93f 100644
--- a/encoding/Cargo.toml
+++ b/encoding/Cargo.toml
@@ -8,4 +8,4 @@ edition = "2018"
 
 [dependencies]
 blake2b_simd = "0.5.9"
-serde_cbor = "0.10.2"
+serde_cbor = "0.11.0"
diff --git a/ipld/cid/src/to_cid.rs b/ipld/cid/src/to_cid.rs
index c1391c4eb96e..4bc7458ac708 100644
--- a/ipld/cid/src/to_cid.rs
+++ b/ipld/cid/src/to_cid.rs
@@ -84,7 +84,7 @@ impl ToCid for [u8] {
             // Verify that hash can be decoded, this is very cheap
             multihash::decode(self)?;
 
-            Ok(BaseCid::new(Codec::DagProtobuf, Version::V0, self).into())
+            Ok(BaseCid::new(Codec::DagCBOR, Version::V0, self).into())
         } else {
             let mut cur = Cursor::new(self);
             let raw_version = cur.read_varint()?;
diff --git a/vm/address/Cargo.toml b/vm/address/Cargo.toml
index 051bd0ebf64c..e178fdc93445 100644
--- a/vm/address/Cargo.toml
+++ b/vm/address/Cargo.toml
@@ -11,4 +11,4 @@ data-encoding = "2.1.2"
 data-encoding-macro = "0.1.7"
 leb128 = "0.2.1"
 encoding = {path = "../../encoding"}
-serde_cbor = "0.10.2"
+serde_cbor = "0.11.0"