diff --git a/.github/workflows/cron-daily-fuzz.yml b/.github/workflows/cron-daily-fuzz.yml
index ca6569f0..9f87fe6d 100644
--- a/.github/workflows/cron-daily-fuzz.yml
+++ b/.github/workflows/cron-daily-fuzz.yml
@@ -35,7 +35,7 @@ jobs:
           key: cache-${{ matrix.target }}-${{ hashFiles('**/Cargo.toml','**/Cargo.lock') }}
       - uses: dtolnay/rust-toolchain@stable
         with:
-          toolchain: '1.65.0'
+          toolchain: '1.75.0'
       - name: fuzz
         run: |
           if [[ "${{ matrix.fuzz_target }}" =~ ^bitcoin ]]; then
diff --git a/Cargo-minimal.lock b/Cargo-minimal.lock
index 3af8e289..285aadad 100644
--- a/Cargo-minimal.lock
+++ b/Cargo-minimal.lock
@@ -388,6 +388,18 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3011d1213f159867b13cfd6ac92d2cd5f1345762c63be3554e84092d85a50bbd"
 
+[[package]]
+name = "honggfuzz"
+version = "0.5.58"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6e8319f3cc8fe416e7aa1ab95dcc04fd49f35397a47d0b2f0f225f6dba346a07"
+dependencies = [
+ "lazy_static",
+ "memmap2",
+ "rustc_version",
+ "semver",
+]
+
 [[package]]
 name = "httpdate"
 version = "1.0.3"
@@ -445,6 +457,22 @@ dependencies = [
  "socks",
 ]
 
+[[package]]
+name = "jsonrpc-fuzz"
+version = "0.0.1"
+dependencies = [
+ "honggfuzz",
+ "jsonrpc",
+ "serde",
+ "serde_json",
+]
+
+[[package]]
+name = "lazy_static"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bbd2bcb4c963f2ddae06a2efc7e9f3591312473c50c6685e1f298068316e66fe"
+
 [[package]]
 name = "libc"
 version = "0.2.158"
@@ -480,6 +508,15 @@ version = "2.7.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f52b00d39961fc5b2736ea853c9cc86238e165017a493d1d5c8eac6bdc4cc273"
 
+[[package]]
+name = "memmap2"
+version = "0.9.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "744133e4a0e0a658e1374cf3bf8e415c4052a15a111acd372764c55b4177d490"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "miniz_oxide"
 version = "0.8.4"
@@ -579,6 +616,15 @@ version = "0.1.26"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "56f7d92ca342cea22a06f2121d944b4fd82af56988c270852495420f961d4ace"
 
+[[package]]
+name = "rustc_version"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cfcb3a22ef46e85b45de6ee7e79d063319ebb6594faafcf1c225ea92ab6e9b92"
+dependencies = [
+ "semver",
+]
+
 [[package]]
 name = "rustix"
 version = "0.38.37"
@@ -709,6 +755,12 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "semver"
+version = "1.0.27"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d767eb0aabc880b29956c35734170f26ed551a859dbd361d140cdbeca61ab1e2"
+
 [[package]]
 name = "serde"
 version = "1.0.203"
diff --git a/Cargo-recent.lock b/Cargo-recent.lock
index dd1f64c8..5a19989a 100644
--- a/Cargo-recent.lock
+++ b/Cargo-recent.lock
@@ -388,6 +388,18 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3011d1213f159867b13cfd6ac92d2cd5f1345762c63be3554e84092d85a50bbd"
 
+[[package]]
+name = "honggfuzz"
+version = "0.5.58"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6e8319f3cc8fe416e7aa1ab95dcc04fd49f35397a47d0b2f0f225f6dba346a07"
+dependencies = [
+ "lazy_static",
+ "memmap2",
+ "rustc_version",
+ "semver",
+]
+
 [[package]]
 name = "httpdate"
 version = "1.0.3"
@@ -456,6 +468,22 @@ dependencies = [
  "socks",
 ]
 
+[[package]]
+name = "jsonrpc-fuzz"
+version = "0.0.1"
+dependencies = [
+ "honggfuzz",
+ "jsonrpc",
+ "serde",
+ "serde_json",
+]
+
+[[package]]
+name = "lazy_static"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bbd2bcb4c963f2ddae06a2efc7e9f3591312473c50c6685e1f298068316e66fe"
+
 [[package]]
 name = "libc"
 version = "0.2.169"
@@ -491,6 +519,15 @@ version = "2.7.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "78ca9ab1a0babb1e7d5695e3530886289c18cf2f87ec19a575a0abdce112e3a3"
 
+[[package]]
+name = "memmap2"
+version = "0.9.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "744133e4a0e0a658e1374cf3bf8e415c4052a15a111acd372764c55b4177d490"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "miniz_oxide"
 version = "0.8.4"
@@ -601,6 +638,15 @@ version = "0.1.26"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "56f7d92ca342cea22a06f2121d944b4fd82af56988c270852495420f961d4ace"
 
+[[package]]
+name = "rustc_version"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cfcb3a22ef46e85b45de6ee7e79d063319ebb6594faafcf1c225ea92ab6e9b92"
+dependencies = [
+ "semver",
+]
+
 [[package]]
 name = "rustix"
 version = "0.38.44"
@@ -731,6 +777,12 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "semver"
+version = "1.0.27"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d767eb0aabc880b29956c35734170f26ed551a859dbd361d140cdbeca61ab1e2"
+
 [[package]]
 name = "serde"
 version = "1.0.217"
diff --git a/Cargo.toml b/Cargo.toml
index c62e9a3a..d3231233 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,5 +1,5 @@
 [workspace]
-members = [ "bitreq", "client", "jsonrpc", "node", "types"]
+members = [ "bitreq", "client", "fuzz", "jsonrpc", "node", "types"]
 exclude = ["integration_test", "verify"]
 resolver = "2"
 
diff --git a/fuzz/Cargo.toml b/fuzz/Cargo.toml
index ac142228..10293ba5 100644
--- a/fuzz/Cargo.toml
+++ b/fuzz/Cargo.toml
@@ -11,13 +11,13 @@ cargo-fuzz = true
 
 [dependencies]
 honggfuzz = { version = "0.5.55", default-features = false }
-jsonrpc = { path = "..", features = ["bitreq_http"] }
+jsonrpc = { path = "../jsonrpc", features = ["bitreq_http"] }
 
 serde = { version = "1.0.103", features = [ "derive" ] }
 serde_json = "1.0"
 
 [lints.rust]
-unexpected_cfgs = { level = "deny", check-cfg = ['cfg(fuzzing)'] }
+unexpected_cfgs = { level = "deny", check-cfg = ['cfg(fuzzing)', 'cfg(jsonrpc_fuzz)'] }
 
 [[bin]]
 name = "bitreq_http"