diff --git a/crypto/schnorr/Cargo.toml b/crypto/schnorr/Cargo.toml
index 8cc11325..96abb069 100644
--- a/crypto/schnorr/Cargo.toml
+++ b/crypto/schnorr/Cargo.toml
@@ -23,7 +23,7 @@ rand_core = { version = "0.6", default-features = false }
 
 zeroize = { version = "^1.5", default-features = false, features = ["zeroize_derive"] }
 
-transcript = { package = "flexible-transcript", path = "../transcript", version = "^0.3.2", default-features = false }
+transcript = { package = "flexible-transcript", path = "../transcript", version = "^0.3.2", default-features = false, optional = true }
 
 ciphersuite = { path = "../ciphersuite", version = "^0.4.1", default-features = false, features = ["alloc"] }
 multiexp = { path = "../multiexp", version = "0.4", default-features = false, features = ["batch"] }
@@ -39,6 +39,6 @@ dalek-ff-group = { path =  "../dalek-ff-group" }
 ciphersuite = { path = "../ciphersuite", features = ["ed25519"] }
 
 [features]
-aggregate = []
-std = ["std-shims/std", "rand_core/std", "zeroize/std", "transcript/std", "ciphersuite/std", "multiexp/std"]
+aggregate = ["transcript"]
+std = ["std-shims/std", "rand_core/std", "zeroize/std", "transcript?/std", "ciphersuite/std", "multiexp/std"]
 default = ["std"]