diff --git a/rust/Cargo.lock b/rust/Cargo.lock
index 7e7b5d055..42e317870 100644
--- a/rust/Cargo.lock
+++ b/rust/Cargo.lock
@@ -197,9 +197,9 @@ checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
 
 [[package]]
 name = "axum"
-version = "0.6.19"
+version = "0.6.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a6a1de45611fdb535bfde7b7de4fd54f4fd2b17b1737c0a59b69bf9b92074b8c"
+checksum = "3b829e4e32b91e643de6eafe82b1d90675f5874230191a4ffbc1b336dec4d6bf"
 dependencies = [
  "async-trait",
  "axum-core",
@@ -350,9 +350,9 @@ dependencies = [
 
 [[package]]
 name = "cc"
-version = "1.0.80"
+version = "1.0.81"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "51f1226cd9da55587234753d1245dd5b132343ea240f26b6a9003d68706141ba"
+checksum = "6c6b2562119bf28c3439f7f02db99faf0aa1a8cdfe5772a2ee155d32227239f0"
 dependencies = [
  "jobserver",
  "libc",
@@ -613,9 +613,9 @@ dependencies = [
 
 [[package]]
 name = "deranged"
-version = "0.3.6"
+version = "0.3.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8810e7e2cf385b1e9b50d68264908ec367ba642c96d02edfe61c39e88e2a3c01"
+checksum = "7684a49fb1af197853ef7b2ee694bc1f5b4179556f1e5710e1760c5db6f5e929"
 dependencies = [
  "serde",
 ]
@@ -1210,9 +1210,9 @@ checksum = "c40411d0e5c63ef1323c3d09ce5ec6d84d71531e18daed0743fccea279d7deb6"
 
 [[package]]
 name = "indicatif"
-version = "0.17.5"
+version = "0.17.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8ff8cc23a7393a397ed1d7f56e6365cba772aba9f9912ab968b03043c395d057"
+checksum = "0b297dc40733f23a0e52728a58fa9489a5b7638a324932de16b41adc3ef80730"
 dependencies = [
  "console",
  "instant",
@@ -1298,7 +1298,7 @@ dependencies = [
  "derive-getters",
  "quick-xml",
  "strip-ansi-escapes",
- "time 0.3.24",
+ "time 0.3.25",
 ]
 
 [[package]]
@@ -1413,9 +1413,9 @@ dependencies = [
 
 [[package]]
 name = "matchit"
-version = "0.7.1"
+version = "0.7.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "67827e6ea8ee8a7c4a72227ef4fc08957040acffdb5f122733b24fa12daff41b"
+checksum = "ed1202b2a6f884ae56f04cff409ab315c5ce26b5e58d7412e484f01fd52f52ef"
 
 [[package]]
 name = "md5"
@@ -2162,7 +2162,7 @@ dependencies = [
  "regex",
  "reqwest",
  "serde_json",
- "time 0.3.24",
+ "time 0.3.25",
  "tokio",
  "tracing",
  "tracing-core",
@@ -2706,9 +2706,9 @@ dependencies = [
 
 [[package]]
 name = "rustix"
-version = "0.38.4"
+version = "0.38.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0a962918ea88d644592894bc6dc55acc6c0956488adcebbfb6e273506b7fd6e5"
+checksum = "1ee020b1716f0a80e2ace9b03441a749e402e86712f15f16fe8a8f75afac732f"
 dependencies = [
  "bitflags 2.3.3",
  "errno",
@@ -2719,9 +2719,9 @@ dependencies = [
 
 [[package]]
 name = "rustls"
-version = "0.21.5"
+version = "0.21.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "79ea77c539259495ce8ca47f53e66ae0330a8819f67e23ac96ca02f50e7b7d36"
+checksum = "1d1feddffcfcc0b33f5c6ce9a29e341e4cd59c3f78e7ee45f4a40c038b1d6cbb"
 dependencies = [
  "log",
  "ring",
@@ -2837,18 +2837,18 @@ checksum = "b0293b4b29daaf487284529cc2f5675b8e57c61f70167ba415a463651fd6a918"
 
 [[package]]
 name = "serde"
-version = "1.0.180"
+version = "1.0.181"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0ea67f183f058fe88a4e3ec6e2788e003840893b91bac4559cabedd00863b3ed"
+checksum = "6d3e73c93c3240c0bda063c239298e633114c69a888c3e37ca8bb33f343e9890"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.180"
+version = "1.0.181"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "24e744d7782b686ab3b73267ef05697159cc0e5abbed3f47f9933165e5219036"
+checksum = "be02f6cb0cd3a5ec20bbcfbcbd749f57daddb1a0882dc2e46a6c236c90b977ed"
 dependencies = [
  "proc-macro2 1.0.66",
  "quote 1.0.32",
@@ -2900,7 +2900,7 @@ dependencies = [
  "serde",
  "serde_json",
  "serde_with_macros",
- "time 0.3.24",
+ "time 0.3.25",
 ]
 
 [[package]]
@@ -2975,7 +2975,7 @@ checksum = "acee08041c5de3d5048c8b3f6f13fafb3026b24ba43c6a695a0c76179b844369"
 dependencies = [
  "log",
  "termcolor",
- "time 0.3.24",
+ "time 0.3.25",
 ]
 
 [[package]]
@@ -3251,9 +3251,9 @@ dependencies = [
 
 [[package]]
 name = "time"
-version = "0.3.24"
+version = "0.3.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b79eabcd964882a646b3584543ccabeae7869e9ac32a46f6f22b7a5bd405308b"
+checksum = "b0fdd63d58b18d663fbdf70e049f00a22c8e42be082203be7f26589213cd75ea"
 dependencies = [
  "deranged",
  "itoa",
@@ -3510,7 +3510,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "09d48f71a791638519505cefafe162606f706c25592e4bde4d97600c0195312e"
 dependencies = [
  "crossbeam-channel",
- "time 0.3.24",
+ "time 0.3.25",
  "tracing-subscriber",
 ]
 
@@ -3559,7 +3559,7 @@ dependencies = [
  "sharded-slab",
  "smallvec",
  "thread_local",
- "time 0.3.24",
+ "time 0.3.25",
  "tracing",
  "tracing-core",
  "tracing-log",
@@ -4115,7 +4115,7 @@ dependencies = [
  "hmac",
  "pbkdf2",
  "sha1",
- "time 0.3.24",
+ "time 0.3.25",
  "zstd",
 ]
 
diff --git a/rust/pact_models/src/message.rs b/rust/pact_models/src/message.rs
index 3d316b1bd..77daa5692 100644
--- a/rust/pact_models/src/message.rs
+++ b/rust/pact_models/src/message.rs
@@ -184,7 +184,7 @@ impl Message {
     /// Constructs a `Message` from the `Json` struct.
     pub fn from_json(index: usize, json: &Value, spec_version: &PactSpecification) -> anyhow::Result<Message> {
         match spec_version {
-            &PactSpecification::V3 => {
+            PactSpecification::V3 => {
                 let id = json.get("_id").map(|id| json_to_string(id));
                 let description = match json.get("description") {
                     Some(v) => match *v {
@@ -200,7 +200,6 @@ impl Message {
                   }).collect(),
                   _ => hashmap!{},
                 };
-              let mut body = body_from_json(json, "contents", &None);
               let content_type = metadata.iter()
                 .find(|(k, _)| {
                   let key = k.to_ascii_lowercase();
@@ -209,9 +208,17 @@ impl Message {
                 .map(|(_, v)| json_to_string(v))
                 .map(|s| ContentType::parse(s.as_str()).ok())
                 .flatten();
-              if let Some(ct) = content_type {
+
+              let body = if let Some(ct) = content_type {
+                let mut body = body_from_json(json, "contents", &Some(hashmap!{
+                  "content-type".to_string() => vec![ ct.to_string() ]
+                }));
                 body.set_content_type(&ct);
-              }
+                body
+              } else {
+                body_from_json(json, "contents", &None)
+              };
+
               Ok(Message {
                   id,
                   description,