diff --git a/components/zcash_address/Cargo.toml b/components/zcash_address/Cargo.toml
index 3cb97e344d..0eafbe1339 100644
--- a/components/zcash_address/Cargo.toml
+++ b/components/zcash_address/Cargo.toml
@@ -13,7 +13,6 @@ edition = "2018"
 
 [dependencies]
 bech32 = "0.8"
-blake2b_simd = "1"
 bs58 = { version = "0.4", features = ["check"] }
 f4jumble = { version = "0.0", path = "../f4jumble" }
 zcash_encoding = { version = "0.0", path = "../zcash_encoding" }
diff --git a/components/zcash_encoding/Cargo.toml b/components/zcash_encoding/Cargo.toml
index 18eb2fe909..0ebe728f14 100644
--- a/components/zcash_encoding/Cargo.toml
+++ b/components/zcash_encoding/Cargo.toml
@@ -16,8 +16,5 @@ edition = "2018"
 byteorder = "1"
 nonempty = "0.7"
 
-[dev-dependencies]
-proptest = "1"
-
 [lib]
 bench = false
diff --git a/zcash_extensions/Cargo.toml b/zcash_extensions/Cargo.toml
index 139fb97b25..ae0532be1f 100644
--- a/zcash_extensions/Cargo.toml
+++ b/zcash_extensions/Cargo.toml
@@ -15,10 +15,8 @@ zcash_primitives = { version = "0.5", path = "../zcash_primitives", features = [
 [dev-dependencies]
 ff = "0.11"
 jubjub = "0.8"
-orchard = "=0.1.0-beta.1"
 rand_core = "0.6"
 zcash_proofs = { version = "0.5", path = "../zcash_proofs" }
-secp256k1 = { version = "0.20", features = ["rand", "bitcoin_hashes"] }
 
 [features]
 transparent-inputs = []
diff --git a/zcash_primitives/Cargo.toml b/zcash_primitives/Cargo.toml
index ee2fd3d59c..d259b98e79 100644
--- a/zcash_primitives/Cargo.toml
+++ b/zcash_primitives/Cargo.toml
@@ -32,11 +32,9 @@ hex = "0.4"
 incrementalmerkletree = "0.2"
 jubjub = "0.8"
 lazy_static = "1"
-log = "0.4"
 memuse = "0.2"
 nonempty = "0.7"
 orchard = "=0.1.0-beta.1"
-pasta_curves = "0.2.1"
 proptest = { version = "1.0.0", optional = true }
 rand = "0.8"
 rand_core = "0.6"
@@ -53,7 +51,6 @@ features = ["pre-zip-212"]
 
 [dev-dependencies]
 criterion = "0.3"
-hex-literal = "0.3"
 proptest = "1.0.0"
 rand_xorshift = "0.3"
 orchard = { version = "=0.1.0-beta.1", features = ["test-dependencies"] }