diff --git a/fuzz/Cargo.toml b/fuzz/Cargo.toml
index 8e32854e..7bd429a7 100644
--- a/fuzz/Cargo.toml
+++ b/fuzz/Cargo.toml
@@ -1,5 +1,6 @@
 [package]
 name = "bitcoin-fuzz"
+edition = "2018"
 version = "0.0.1"
 authors = ["Automatically generated"]
 publish = false
@@ -14,7 +15,12 @@ honggfuzz_fuzz = ["honggfuzz"]
 [dependencies]
 honggfuzz = { version = "0.5", optional = true, default-features = false }
 afl = { version = "0.4", optional = true }
-bitcoin = { version = "0.30.0" }
+bitcoin = { version = "0.30.0", features = [ "serde" ] }
+
+rust-crypto = "0.2"
+serde = { version = "1.0.103", features = [ "derive" ] }
+serde_json = "1.0"
+serde_cbor = "0.9"
 
 [[bin]]
 name = "deserialize_block"
@@ -60,5 +66,31 @@ path = "fuzz_targets/bitcoin/script_bytes_to_asm_fmt.rs"
 name = "deserialize_witness"
 path = "fuzz_targets/bitcoin/deserialize_witness.rs"
 
-[patch.crates-io.bitcoin_hashes]
-path = "../../hashes"
+
+[[bin]]
+name = "sha1"
+path = "fuzz_targets/hashes/sha1.rs"
+
+[[bin]]
+name = "ripemd160"
+path = "fuzz_targets/hashes/ripemd160.rs"
+
+[[bin]]
+name = "sha256"
+path = "fuzz_targets/hashes/sha256.rs"
+
+[[bin]]
+name = "sha512"
+path = "fuzz_targets/hashes/sha512.rs"
+
+[[bin]]
+name = "sha512_256"
+path = "fuzz_targets/hashes/sha512_256.rs"
+
+[[bin]]
+name = "cbor"
+path = "fuzz_targets/hashes/cbor.rs"
+
+[[bin]]
+name = "json"
+path = "fuzz_targets/hashes/json.rs"
diff --git a/hashes/fuzz/fuzz_targets/cbor.rs b/fuzz/fuzz_targets/hashes/cbor.rs
similarity index 86%
rename from hashes/fuzz/fuzz_targets/cbor.rs
rename to fuzz/fuzz_targets/hashes/cbor.rs
index 4d0223ba..7bb899ec 100644
--- a/hashes/fuzz/fuzz_targets/cbor.rs
+++ b/fuzz/fuzz_targets/hashes/cbor.rs
@@ -1,11 +1,7 @@
 
-extern crate serde;
-#[macro_use] extern crate serde_derive;
-extern crate bitcoin_hashes;
-extern crate serde_cbor;
-
-use bitcoin_hashes::Hmac;
-use bitcoin_hashes::{sha1, sha512, ripemd160, sha256d};
+use bitcoin::hashes::Hmac;
+use bitcoin::hashes::{sha1, sha512, ripemd160, sha256d};
+use serde::{Deserialize, Serialize};
 
 #[derive(Deserialize, Serialize)]
 struct Hmacs {
diff --git a/hashes/fuzz/fuzz_targets/json.rs b/fuzz/fuzz_targets/hashes/json.rs
similarity index 86%
rename from hashes/fuzz/fuzz_targets/json.rs
rename to fuzz/fuzz_targets/hashes/json.rs
index 2553c710..e23b6459 100644
--- a/hashes/fuzz/fuzz_targets/json.rs
+++ b/fuzz/fuzz_targets/hashes/json.rs
@@ -1,11 +1,7 @@
 
-extern crate serde;
-#[macro_use] extern crate serde_derive;
-extern crate bitcoin_hashes;
-extern crate serde_json;
-
-use bitcoin_hashes::Hmac;
-use bitcoin_hashes::{sha1, sha512, ripemd160, sha256d};
+use bitcoin::hashes::Hmac;
+use bitcoin::hashes::{sha1, sha512, ripemd160, sha256d};
+use serde::{Deserialize, Serialize};
 
 #[derive(Deserialize, Serialize)]
 struct Hmacs {
diff --git a/hashes/fuzz/fuzz_targets/ripemd160.rs b/fuzz/fuzz_targets/hashes/ripemd160.rs
similarity index 91%
rename from hashes/fuzz/fuzz_targets/ripemd160.rs
rename to fuzz/fuzz_targets/hashes/ripemd160.rs
index 09becd2a..c46bb87b 100644
--- a/hashes/fuzz/fuzz_targets/ripemd160.rs
+++ b/fuzz/fuzz_targets/hashes/ripemd160.rs
@@ -1,9 +1,6 @@
 
-extern crate bitcoin_hashes;
-extern crate crypto;
-
-use bitcoin_hashes::Hash;
-use bitcoin_hashes::ripemd160;
+use bitcoin::hashes::Hash;
+use bitcoin::hashes::ripemd160;
 use crypto::digest::Digest;
 use crypto::ripemd160::Ripemd160;
 
diff --git a/hashes/fuzz/fuzz_targets/sha1.rs b/fuzz/fuzz_targets/hashes/sha1.rs
similarity index 91%
rename from hashes/fuzz/fuzz_targets/sha1.rs
rename to fuzz/fuzz_targets/hashes/sha1.rs
index ce2b08c2..16c52159 100644
--- a/hashes/fuzz/fuzz_targets/sha1.rs
+++ b/fuzz/fuzz_targets/hashes/sha1.rs
@@ -1,9 +1,6 @@
 
-extern crate bitcoin_hashes;
-extern crate crypto;
-
-use bitcoin_hashes::Hash;
-use bitcoin_hashes::sha1;
+use bitcoin::hashes::Hash;
+use bitcoin::hashes::sha1;
 use crypto::digest::Digest;
 use crypto::sha1::Sha1;
 
diff --git a/hashes/fuzz/fuzz_targets/sha256.rs b/fuzz/fuzz_targets/hashes/sha256.rs
similarity index 91%
rename from hashes/fuzz/fuzz_targets/sha256.rs
rename to fuzz/fuzz_targets/hashes/sha256.rs
index 89b6de8e..7e27025e 100644
--- a/hashes/fuzz/fuzz_targets/sha256.rs
+++ b/fuzz/fuzz_targets/hashes/sha256.rs
@@ -1,9 +1,6 @@
 
-extern crate bitcoin_hashes;
-extern crate crypto;
-
-use bitcoin_hashes::Hash;
-use bitcoin_hashes::sha256;
+use bitcoin::hashes::Hash;
+use bitcoin::hashes::sha256;
 use crypto::digest::Digest;
 use crypto::sha2::Sha256;
 
diff --git a/hashes/fuzz/fuzz_targets/sha512.rs b/fuzz/fuzz_targets/hashes/sha512.rs
similarity index 91%
rename from hashes/fuzz/fuzz_targets/sha512.rs
rename to fuzz/fuzz_targets/hashes/sha512.rs
index f8909c1f..bf3c1f13 100644
--- a/hashes/fuzz/fuzz_targets/sha512.rs
+++ b/fuzz/fuzz_targets/hashes/sha512.rs
@@ -1,9 +1,6 @@
 
-extern crate bitcoin_hashes;
-extern crate crypto;
-
-use bitcoin_hashes::Hash;
-use bitcoin_hashes::sha512;
+use bitcoin::hashes::Hash;
+use bitcoin::hashes::sha512;
 use crypto::digest::Digest;
 use crypto::sha2::Sha512;
 
diff --git a/hashes/fuzz/fuzz_targets/sha512_256.rs b/fuzz/fuzz_targets/hashes/sha512_256.rs
similarity index 91%
rename from hashes/fuzz/fuzz_targets/sha512_256.rs
rename to fuzz/fuzz_targets/hashes/sha512_256.rs
index 281b1caf..aa188161 100644
--- a/hashes/fuzz/fuzz_targets/sha512_256.rs
+++ b/fuzz/fuzz_targets/hashes/sha512_256.rs
@@ -1,9 +1,6 @@
 
-extern crate bitcoin_hashes;
-extern crate crypto;
-
-use bitcoin_hashes::Hash;
-use bitcoin_hashes::sha512_256;
+use bitcoin::hashes::Hash;
+use bitcoin::hashes::sha512_256;
 use crypto::digest::Digest;
 use crypto::sha2::Sha512Trunc256;
 
diff --git a/hashes/fuzz/Cargo.toml b/hashes/fuzz/Cargo.toml
deleted file mode 100644
index 2182b776..00000000
--- a/hashes/fuzz/Cargo.toml
+++ /dev/null
@@ -1,53 +0,0 @@
-[package]
-name = "bitcoin_hashes-fuzz"
-version = "0.0.1"
-authors = ["copied from rust-bitcoin"]
-publish = false
-
-[package.metadata]
-cargo-fuzz = true
-
-[features]
-honggfuzz_fuzz = ["honggfuzz"]
-
-[dependencies]
-honggfuzz = { version = "0.5", optional = true }
-bitcoin_hashes = { path = "..", features = ["serde"] }
-rust-crypto = "0.2"
-
-serde = "1.0"
-serde_derive = "1.0"
-serde_json = "1.0"
-serde_cbor = "0.9"
-
-# Prevent this from interfering with workspaces
-[workspace]
-members = ["."]
-
-[[bin]]
-name = "sha1"
-path = "fuzz_targets/sha1.rs"
-
-[[bin]]
-name = "ripemd160"
-path = "fuzz_targets/ripemd160.rs"
-
-[[bin]]
-name = "sha256"
-path = "fuzz_targets/sha256.rs"
-
-[[bin]]
-name = "sha512"
-path = "fuzz_targets/sha512.rs"
-
-[[bin]]
-name = "sha512_256"
-path = "fuzz_targets/sha512_256.rs"
-
-[[bin]]
-name = "cbor"
-path = "fuzz_targets/cbor.rs"
-
-[[bin]]
-name = "json"
-path = "fuzz_targets/json.rs"
diff --git a/hashes/fuzz/travis-fuzz.sh b/hashes/fuzz/travis-fuzz.sh
deleted file mode 100755
index aebd1aa4..00000000
--- a/hashes/fuzz/travis-fuzz.sh
+++ /dev/null
@@ -1,22 +0,0 @@
-#!/bin/bash
-set -e
-cargo install --force honggfuzz
-for TARGET in fuzz_targets/*; do
-    FILENAME=$(basename $TARGET)
-	FILE="${FILENAME%.*}"
-	if [ -d hfuzz_input/$FILE ]; then
-	    HFUZZ_INPUT_ARGS="-f hfuzz_input/$FILE/input"
-	fi
-
-        rm -f hfuzz_workspace/$FILE/HONGGFUZZ.REPORT.TXT
-
-	HFUZZ_BUILD_ARGS="--features honggfuzz_fuzz" HFUZZ_RUN_ARGS="-N1000000 --exit_upon_crash -v $HFUZZ_INPUT_ARGS" cargo hfuzz run $FILE
-
-	if [ -f hfuzz_workspace/$FILE/HONGGFUZZ.REPORT.TXT ]; then
-		cat hfuzz_workspace/$FILE/HONGGFUZZ.REPORT.TXT
-		for CASE in hfuzz_workspace/$FILE/SIG*; do
-			cat $CASE | xxd -p
-		done
-		exit 1
-	fi
-done