diff --git a/ruby/Cargo.lock b/ruby/Cargo.lock
index 68e97bd4ff91..c67cf85cf835 100644
--- a/ruby/Cargo.lock
+++ b/ruby/Cargo.lock
@@ -76,6 +76,18 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "chrono"
+version = "0.4.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "670ad68c9088c2a963aaa298cb369688cf3f9465ce5e2d4ca10e6e0098a1ce73"
+dependencies = [
+ "libc",
+ "num-integer",
+ "num-traits",
+ "winapi",
+]
+
 [[package]]
 name = "clap"
 version = "2.33.3"
@@ -208,9 +220,9 @@ dependencies = [
 
 [[package]]
 name = "matchers"
-version = "0.1.0"
+version = "0.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8263075bb86c5a1b1427b5ae862e8889656f126e9f77c484496e8b47cf5c5558"
+checksum = "f099785f7595cc4b4553a174ce30dd7589ef93391ff414dbb67f62392b9e0ce1"
 dependencies = [
  "regex-automata",
 ]
@@ -248,6 +260,25 @@ dependencies = [
  "serde_json",
 ]
 
+[[package]]
+name = "num-integer"
+version = "0.1.44"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d2cc698a63b549a70bc047073d2949cce27cd1c7b0a4a862d08a8031bc2801db"
+dependencies = [
+ "autocfg",
+ "num-traits",
+]
+
+[[package]]
+name = "num-traits"
+version = "0.2.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9a64b1ec5cda2586e284722486d802acf1f7dbdc623e2bfc57e65ca1cd099290"
+dependencies = [
+ "autocfg",
+]
+
 [[package]]
 name = "num_cpus"
 version = "1.13.0"
@@ -510,22 +541,36 @@ dependencies = [
  "tracing-core",
 ]
 
+[[package]]
+name = "tracing-serde"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fb65ea441fbb84f9f6748fd496cf7f63ec9af5bca94dd86456978d055e8eb28b"
+dependencies = [
+ "serde",
+ "tracing-core",
+]
+
 [[package]]
 name = "tracing-subscriber"
-version = "0.3.1"
+version = "0.2.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "80a4ddde70311d8da398062ecf6fc2c309337de6b0f77d6c27aff8d53f6fca52"
+checksum = "0e0d2eaa99c3c2e41547cfa109e910a68ea03823cccad4a0525dcbc9b01e8c71"
 dependencies = [
  "ansi_term 0.12.1",
+ "chrono",
  "lazy_static",
  "matchers",
  "regex",
+ "serde",
+ "serde_json",
  "sharded-slab",
  "smallvec",
  "thread_local",
  "tracing",
  "tracing-core",
  "tracing-log",
+ "tracing-serde",
 ]
 
 [[package]]
diff --git a/ruby/extractor/Cargo.toml b/ruby/extractor/Cargo.toml
index 16b970b2796b..efc5a12159d8 100644
--- a/ruby/extractor/Cargo.toml
+++ b/ruby/extractor/Cargo.toml
@@ -14,7 +14,7 @@ tree-sitter-embedded-template = "0.19"
 tree-sitter-ruby = { git = "https://github.com/tree-sitter/tree-sitter-ruby.git", rev = "bb6a42e42b048627a74a127d3e0184c1eef01de9" }
 clap = "2.33"
 tracing = "0.1"
-tracing-subscriber = { version = "0.3", features = ["env-filter"] }
+tracing-subscriber = { version = "0.2", features = ["env-filter"] }
 rayon = "1.5.0"
 num_cpus = "1.13.0"
 regex = "1.4.3"
diff --git a/ruby/generator/Cargo.toml b/ruby/generator/Cargo.toml
index 9e30162676bb..1625fe88ead6 100644
--- a/ruby/generator/Cargo.toml
+++ b/ruby/generator/Cargo.toml
@@ -10,6 +10,6 @@ edition = "2018"
 clap = "2.33"
 node-types = { path = "../node-types" }
 tracing = "0.1"
-tracing-subscriber = { version = "0.3", features = ["env-filter"] }
+tracing-subscriber = { version = "0.2", features = ["env-filter"] }
 tree-sitter-embedded-template = "0.19"
 tree-sitter-ruby = { git = "https://github.com/tree-sitter/tree-sitter-ruby.git", rev = "bb6a42e42b048627a74a127d3e0184c1eef01de9" }