diff --git a/Cargo.lock b/Cargo.lock
index 986ed51c..bdeb138a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -970,6 +970,12 @@ dependencies = [
  "either",
 ]
 
+[[package]]
+name = "itoa"
+version = "1.0.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "540654e97a3f4470a492cd30ff187bc95d89557a903a2bbf112e2fae98104ef2"
+
 [[package]]
 name = "jobserver"
 version = "0.1.27"
@@ -1291,6 +1297,8 @@ dependencies = [
  "pna",
  "rand",
  "rayon",
+ "serde",
+ "serde_json",
  "tabled",
  "walkdir",
  "windows",
@@ -1475,6 +1483,12 @@ dependencies = [
  "windows-sys",
 ]
 
+[[package]]
+name = "ryu"
+version = "1.0.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f3cb5ba0dc43242ce17de99c180e96db90b235b8a9fdc9543c96d2209116bd9f"
+
 [[package]]
 name = "same-file"
 version = "1.0.6"
@@ -1516,6 +1530,17 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "serde_json"
+version = "1.0.109"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cb0652c533506ad7a2e353cce269330d6afd8bdfb6d75e0ace5b35aacbd7b9e9"
+dependencies = [
+ "itoa",
+ "ryu",
+ "serde",
+]
+
 [[package]]
 name = "serde_spanned"
 version = "0.6.6"
diff --git a/cli/Cargo.toml b/cli/Cargo.toml
index fc18ba0a..efa9cd86 100644
--- a/cli/Cargo.toml
+++ b/cli/Cargo.toml
@@ -26,6 +26,8 @@ nom = "7.1.3"
 normalize-path = "0.2.1"
 pna = { version = "0.20.0", path = "../pna" }
 rayon = "1.10.0"
+serde = { version = "1.0.193", features = ["derive"] }
+serde_json = "1.0.109"
 tabled = { version = "0.16.0", default-features = false, features = ["std", "ansi"] }
 rand = "0.8.5"
 indexmap = "2.6.0"