diff --git a/Cargo.toml b/Cargo.toml
index 6d07849d9a..463713086a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -39,7 +39,7 @@ equihash = { version = "0.2", path = "components/equihash", default-features = f
 zcash_address = { version = "0.10", path = "components/zcash_address", default-features = false }
 zcash_client_backend = { version = "0.21", path = "zcash_client_backend" }
 zcash_encoding = { version = "0.3", path = "components/zcash_encoding", default-features = false }
-zcash_keys = { version = "0.12", path = "zcash_keys" }
+zcash_keys = { version = "0.12", path = "zcash_keys", default-features = false  }
 zcash_protocol = { version = "0.7.2", path = "components/zcash_protocol", default-features = false }
 zip321 = { version = "0.6", path = "components/zip321" }
 
diff --git a/zcash_client_backend/Cargo.toml b/zcash_client_backend/Cargo.toml
index 716ab473b6..b87097c157 100644
--- a/zcash_client_backend/Cargo.toml
+++ b/zcash_client_backend/Cargo.toml
@@ -27,7 +27,7 @@ rustdoc-args = ["--cfg", "docsrs"]
 [dependencies]
 zcash_address.workspace = true
 zcash_encoding.workspace = true
-zcash_keys = { workspace = true, features = ["sapling"] }
+zcash_keys = { workspace = true, features = ["std", "sapling"] }
 zcash_note_encryption.workspace = true
 zcash_primitives = { workspace = true, features = ["std", "circuits"] }
 zcash_protocol.workspace = true
diff --git a/zcash_keys/CHANGELOG.md b/zcash_keys/CHANGELOG.md
index 43e556bf01..dfcd895450 100644
--- a/zcash_keys/CHANGELOG.md
+++ b/zcash_keys/CHANGELOG.md
@@ -16,6 +16,8 @@ workspace.
 ### Changed
 - MSRV is now 1.85.1.
 - Migrated to `orchard 0.12`, `sapling-crypto 0.6`.
+- The `std` feature flag now enables the equivalent flag on the dependencies
+  `orchard`, `sapling-crypto`, `zcash_transparent`, and `zcash_address`.
 
 ## [0.12.0] - 2025-10-13
 
diff --git a/zcash_keys/Cargo.toml b/zcash_keys/Cargo.toml
index 11a7ddccab..0ee42bda5d 100644
--- a/zcash_keys/Cargo.toml
+++ b/zcash_keys/Cargo.toml
@@ -89,17 +89,25 @@ zcash_script.workspace = true
 
 [features]
 default = ["std"]
-std = ["dep:document-features"]
+std = [
+    "dep:document-features",
+    "orchard?/std",
+    "sapling?/std",
+    "transparent/std",
+    "zcash_address/std",
+]
 
 ## Enables use of transparent key parts and addresses
 transparent-inputs = [
-  "dep:bip32",
-  "transparent/transparent-inputs",
+    "dep:bip32",
+    "transparent/transparent-inputs",
 ]
 
 ## Enables use of zcashd-derived secp256k1 secret key encodings.
 transparent-key-encoding = [
-  "transparent-inputs", "dep:secp256k1", "dep:zeroize"
+    "transparent-inputs",
+    "dep:secp256k1",
+    "dep:zeroize",
 ]
 
 ## Enables use of Orchard key parts and addresses