diff --git a/zebra-chain/src/sapling/keys.rs b/zebra-chain/src/sapling/keys.rs
index 9f83634db..ef274d6d3 100644
--- a/zebra-chain/src/sapling/keys.rs
+++ b/zebra-chain/src/sapling/keys.rs
@@ -868,7 +868,7 @@ impl FromStr for FullViewingKey {
 
 /// An ephemeral public key for Sapling key agreement.
 ///
-/// https://zips.z.cash/protocol/canopy.pdf#concretesaplingkeyagreement
+/// https://zips.z.cash/protocol/protocol.pdf#concretesaplingkeyagreement
 #[derive(Copy, Clone, Deserialize, PartialEq, Serialize)]
 pub struct EphemeralPublicKey(
     #[serde(with = "serde_helpers::AffinePoint")] pub jubjub::AffinePoint,
diff --git a/zebra-chain/src/sapling/tree.rs b/zebra-chain/src/sapling/tree.rs
index b8804c42d..15e06f543 100644
--- a/zebra-chain/src/sapling/tree.rs
+++ b/zebra-chain/src/sapling/tree.rs
@@ -47,7 +47,7 @@ fn merkle_crh_sapling(layer: u8, left: [u8; 32], right: [u8; 32]) -> [u8; 32] {
 lazy_static! {
     /// Sapling note commitment trees have a max depth of 32.
     ///
-    /// https://zips.z.cash/protocol/canopy.pdf#constants
+    /// https://zips.z.cash/protocol/protocol.pdf#constants
     static ref EMPTY_ROOTS: Vec<[u8; 32]> = {
         // Uncommitted^Sapling = I2LEBSP_l_MerkleSapling(1)
         let mut v = vec![jubjub::Fq::one().to_bytes()];
diff --git a/zebra-chain/src/sprout/tree.rs b/zebra-chain/src/sprout/tree.rs
index e80d83aed..e020c2310 100644
--- a/zebra-chain/src/sprout/tree.rs
+++ b/zebra-chain/src/sprout/tree.rs
@@ -57,7 +57,7 @@ fn merkle_crh_sprout(left: [u8; 32], right: [u8; 32]) -> [u8; 32] {
 lazy_static! {
     /// Sprout note commitment trees have a max depth of 29.
     ///
-    /// https://zips.z.cash/protocol/canopy.pdf#constants
+    /// https://zips.z.cash/protocol/protocol.pdf#constants
     static ref EMPTY_ROOTS: Vec<[u8; 32]> = {
         // Uncommitted^Sprout = = [0]^l_MerkleSprout
         let mut v = vec![[0u8; 32]];
diff --git a/zebra-chain/src/transaction/shielded_data.rs b/zebra-chain/src/transaction/shielded_data.rs
index f38ff6cc8..2237ada42 100644
--- a/zebra-chain/src/transaction/shielded_data.rs
+++ b/zebra-chain/src/transaction/shielded_data.rs
@@ -95,7 +95,7 @@ impl ShieldedData {
     /// of the value commitments in the Spend descriptions and Output
     /// descriptions of the transaction, and the balancing value.
     ///
-    /// https://zips.z.cash/protocol/canopy.pdf#saplingbalance
+    /// https://zips.z.cash/protocol/protocol.pdf#saplingbalance
     pub fn binding_verification_key(
         &self,
         value_balance: Amount,
diff --git a/zebra-chain/src/work/difficulty.rs b/zebra-chain/src/work/difficulty.rs
index bc38bd0e1..48865a282 100644
--- a/zebra-chain/src/work/difficulty.rs
+++ b/zebra-chain/src/work/difficulty.rs
@@ -226,7 +226,7 @@ impl CompactDifficulty {
     /// Also returns None on Work overflow, which should be impossible on a
     /// valid chain.
     ///
-    /// [Zcash Specification]: https://zips.z.cash/protocol/canopy.pdf#workdef
+    /// [Zcash Specification]: https://zips.z.cash/protocol/protocol.pdf#workdef
     pub fn to_work(&self) -> Option<Work> {
         let expanded = self.to_expanded()?;
 
diff --git a/zebra-consensus/src/transaction.rs b/zebra-consensus/src/transaction.rs
index 2d04377bd..ea836e338 100644
--- a/zebra-consensus/src/transaction.rs
+++ b/zebra-consensus/src/transaction.rs
@@ -178,7 +178,7 @@ where
                         for spend in shielded_data.spends() {
                             // TODO: check that spend.cv and spend.rk are NOT of small
                             // order.
-                            // https://zips.z.cash/protocol/canopy.pdf#spenddesc
+                            // https://zips.z.cash/protocol/protocol.pdf#spenddesc
 
                             // Queue the validation of the RedJubjub spend
                             // authorization signature for each Spend
@@ -205,7 +205,7 @@ where
                         shielded_data.outputs().for_each(|_output| {
                             // TODO: check that output.cv and output.epk are NOT of small
                             // order.
-                            // https://zips.z.cash/protocol/canopy.pdf#outputdesc
+                            // https://zips.z.cash/protocol/protocol.pdf#outputdesc
 
                             // TODO: prepare public inputs for outputs, then create
                             // a groth16::Item and pass to self.output