diff --git a/Cargo.lock b/Cargo.lock
index fde0ac9a1ff6e51f23c560f2cf78e7f7fce0eaed..65f4aaa707cd0f42c11961958cae402dcd632f8a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4310,9 +4310,9 @@ dependencies = [
 
 [[package]]
 name = "opentelemetry"
-version = "0.31.0"
+version = "0.32.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b84bcd6ae87133e903af7ef497404dda70c60d0ea14895fc8a5e6722754fc2a0"
+checksum = "b0142c63252a9e054e68a4c61a5778f7b14f576274d593f8ce883d191a099682"
 dependencies = [
  "futures-core",
  "futures-sink",
@@ -4324,9 +4324,9 @@ dependencies = [
 
 [[package]]
 name = "opentelemetry-appender-tracing"
-version = "0.31.1"
+version = "0.32.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ef6a1ac5ca3accf562b8c306fa8483c85f4390f768185ab775f242f7fe8fdcc2"
+checksum = "2c0080f0dc1d7c786f467cd85a4e395fcab11ee852004f39a29a18ab7c25d837"
 dependencies = [
  "opentelemetry",
  "tracing",
@@ -4336,9 +4336,9 @@ dependencies = [
 
 [[package]]
 name = "opentelemetry-http"
-version = "0.31.0"
+version = "0.32.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d7a6d09a73194e6b66df7c8f1b680f156d916a1a942abf2de06823dd02b7855d"
+checksum = "5683015d09e2df236ef005b17f6f196f0d5f6313c4fa43a7b6a53b52776e4331"
 dependencies = [
  "async-trait",
  "bytes",
@@ -4349,9 +4349,9 @@ dependencies = [
 
 [[package]]
 name = "opentelemetry-otlp"
-version = "0.31.1"
+version = "0.32.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1f69cd6acbb9af919df949cd1ec9e5e7fdc2ef15d234b6b795aaa525cc02f71f"
+checksum = "9966929966d17620d7c316c643ba62631826e10021409357772d5eea84f62c35"
 dependencies = [
  "http",
  "opentelemetry",
@@ -4361,14 +4361,13 @@ dependencies = [
  "prost",
  "reqwest",
  "thiserror 2.0.18",
- "tracing",
 ]
 
 [[package]]
 name = "opentelemetry-proto"
-version = "0.31.0"
+version = "0.32.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a7175df06de5eaee9909d4805a3d07e28bb752c34cab57fa9cff549da596b30f"
+checksum = "56d658ba1faf63f7b9c492cfbe6e0ec365440a16132d3270c1065f7b33f1b638"
 dependencies = [
  "base64 0.22.1",
  "const-hex",
@@ -4376,22 +4375,22 @@ dependencies = [
  "opentelemetry_sdk",
  "prost",
  "serde",
- "serde_json",
  "tonic",
  "tonic-prost",
 ]
 
 [[package]]
 name = "opentelemetry_sdk"
-version = "0.31.0"
+version = "0.32.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e14ae4f5991976fd48df6d843de219ca6d31b01daaab2dad5af2badeded372bd"
+checksum = "9b59f80e1ac4d5ff7a2db8fb6c80badb7f0f3f858211fba08dd9aaec750894f9"
 dependencies = [
  "futures-channel",
  "futures-executor",
  "futures-util",
  "opentelemetry",
  "percent-encoding",
+ "portable-atomic",
  "rand 0.9.4",
  "thiserror 2.0.18",
  "tokio",
@@ -5300,9 +5299,9 @@ checksum = "dc897dd8d9e8bd1ed8cdad82b5966c3e0ecae09fb1907d58efaa013543185d0a"
 
 [[package]]
 name = "reqwest"
-version = "0.12.28"
+version = "0.13.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "eddd3ca559203180a307f12d114c268abf583f59b03cb906fd0b3ff8646c1147"
+checksum = "219c5811de6525e5416c7d5d53bb656d3afdbc6c5af816e0802bcfa42dbdc1c3"
 dependencies = [
  "base64 0.22.1",
  "bytes",
@@ -5318,9 +5317,6 @@ dependencies = [
  "log",
  "percent-encoding",
  "pin-project-lite",
- "serde",
- "serde_json",
- "serde_urlencoded",
  "sync_wrapper",
  "tokio",
  "tower",
@@ -5635,9 +5631,9 @@ dependencies = [
 
 [[package]]
 name = "saturating-time"
-version = "0.3.0"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b63583a1dd0647d1484228529ab4ecaa874048d2956f117362aa5f5826456230"
+checksum = "802bdbfcca9a239cb46eeaaedea507e37bb13ba1a673762d2e2ef7a9dac63144"
 
 [[package]]
 name = "schannel"
@@ -8410,9 +8406,9 @@ dependencies = [
 
 [[package]]
 name = "tracing-opentelemetry"
-version = "0.32.1"
+version = "0.33.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1ac28f2d093c6c477eaa76b23525478f38de514fa9aeb1285738d4b97a9552fc"
+checksum = "adbc64cba7137545b8044cb1fe9814f7aacf3c6b5f9b45be8bb5db538befdb26"
 dependencies = [
  "js-sys",
  "opentelemetry",
diff --git a/crates/arti/Cargo.toml b/crates/arti/Cargo.toml
index b0416abd4c987ab3a970682c275ae9d636c49eec..16b3462743b4c0223a4acc7b441684ad41da89a8 100644
--- a/crates/arti/Cargo.toml
+++ b/crates/arti/Cargo.toml
@@ -187,11 +187,11 @@ metrics-exporter-prometheus = { version = "0.18.0", optional = true, default-fea
     "http-listener",
 ] }
 notify = { version = "8", default-features = false, features = ["macos_kqueue"] }
-opentelemetry = { version = "0.31.0", optional = true }
-opentelemetry-appender-tracing = { version = "0.31.1", optional = true }
-opentelemetry-otlp = { version = "0.31.0", optional = true }
-opentelemetry-proto = { version = "0.31.0", optional = true }
-opentelemetry_sdk = { version = "0.31.0", features = ["rt-tokio"], optional = true } # TODO: what's up with this feature
+opentelemetry = { version = "0.32.0", optional = true }
+opentelemetry-appender-tracing = { version = "0.32.0", optional = true }
+opentelemetry-otlp = { version = "0.32.0", optional = true }
+opentelemetry-proto = { version = "0.32.0", optional = true }
+opentelemetry_sdk = { version = "0.32.1", features = ["rt-tokio"], optional = true } # TODO: what's up with this feature
 paste = "1.0.3"
 pin-project = "1"
 postage = { version = "0.5.0", default-features = false, features = ["futures-traits"] }
@@ -230,7 +230,7 @@ tor-socksproto = { path = "../tor-socksproto", version = "0.43.0" }
 tracing = "0.1.36"
 tracing-appender = "0.2.0"
 tracing-journald = { version = "0.3.0", optional = true }
-tracing-opentelemetry = { version = "0.32.0", optional = true }
+tracing-opentelemetry = { version = "0.33.0", optional = true }
 tracing-subscriber = { version = "0.3.20", features = ["env-filter"] }
 visibility = { version = "0.1.0", optional = true }
 web-time-compat = { path = "../web-time-compat", version = "0.1.0" }
diff --git a/crates/arti/src/logging/otlp_file_exporter.rs b/crates/arti/src/logging/otlp_file_exporter.rs
index c31ba188f3c1185631a82f75c36b3735e1960db8..19943b1e480f9e61ec726d710540fe5f87e6e3b3 100644
--- a/crates/arti/src/logging/otlp_file_exporter.rs
+++ b/crates/arti/src/logging/otlp_file_exporter.rs
@@ -66,7 +66,7 @@ impl<W: Write + Send + Debug> SpanExporter for FileExporter<W> {
         }))
     }
 
-    fn force_flush(&mut self) -> OTelSdkResult {
+    fn force_flush(&self) -> OTelSdkResult {
         let mut writer = self
             .writer
             .lock()
diff --git a/crates/tor-dirserver/Cargo.toml b/crates/tor-dirserver/Cargo.toml
index b1d2acf377fa6513a96309fda8e095ace77c6713..4fc7dd3a8a9fd260467cd8618e97afd6a11ecded 100644
--- a/crates/tor-dirserver/Cargo.toml
+++ b/crates/tor-dirserver/Cargo.toml
@@ -43,7 +43,7 @@ rand = "0.10.1"
 retry-error = { version = "0.12.0", path = "../retry-error" }
 # NOTE: See the note for `rusqlite` in `../tor-dirmgr/Cargo.toml`.
 rusqlite = ">=0.36.0, <0.40.0"
-saturating-time = "0.3.0"
+saturating-time = "0.4.0"
 strum = { version = "0.28.0", features = ["derive"] }
 thiserror = "2.0.16"
 tokio = { version = "1.47.1", features = ["full", "test-util"] }
diff --git a/crates/tor-netdoc/Cargo.toml b/crates/tor-netdoc/Cargo.toml
index a42afd2a1aa199bb52f68e085bd34b80694a8f29..6ae645dfece07b3ee07afdb7ae7cf005cf171c52 100644
--- a/crates/tor-netdoc/Cargo.toml
+++ b/crates/tor-netdoc/Cargo.toml
@@ -87,7 +87,7 @@ memchr = "2.5"
 paste = "1.0.3"
 phf = { version = "0.13.1", features = ["macros"] }
 rand = { version = "0.10.1" }
-saturating-time = "0.3.0"
+saturating-time = "0.4.0"
 serde = { version = "1.0.103", features = ["derive"] }
 serde_with = "3.0.0"
 signature = "2"