diff --git a/Cargo.lock b/Cargo.lock
index 931653c0..002bf5dc 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -443,9 +443,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.79"
+version = "1.0.93"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e835ff2298f5721608eb1a980ecaee1aef2c132bf95ecc026a11b7bf3c01c02e"
+checksum = "60946a68e5f9d28b0dc1c21bb8a97ee7d018a8b322fa57838ba31cc878e22d99"
 dependencies = [
  "unicode-ident",
 ]
@@ -555,9 +555,9 @@ checksum = "e86697c916019a8588c99b5fac3cead74ec0b4b819707a682fd4d23fa0ce1ba1"
 
 [[package]]
 name = "serde"
-version = "1.0.203"
+version = "1.0.217"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7253ab4de971e72fb7be983802300c30b5a7f0c2e56fab8abfc6a214307c0094"
+checksum = "02fc4265df13d6fa1d00ecff087228cc0a2b5f3c0e87e258d8b94a156e984c70"
 dependencies = [
  "serde_derive",
 ]
@@ -577,9 +577,9 @@ dependencies = [
 
 [[package]]
 name = "serde_derive"
-version = "1.0.203"
+version = "1.0.217"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "500cbc0ebeb6f46627f50f3f5811ccf6bf00643be300b4c3eabc0ef55dc5b5ba"
+checksum = "5a9bf7cf98d04a2b28aead066b7496853d4779c9cc183c440dbac457641e19a0"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -617,9 +617,9 @@ checksum = "5ee073c9e4cd00e28217186dbe12796d692868f432bf2e97ee73bed0c56dfa01"
 
 [[package]]
 name = "syn"
-version = "2.0.57"
+version = "2.0.96"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "11a6ae1e52eb25aab8f3fb9fca13be982a373b8f1157ca14b897a825ba4a2d35"
+checksum = "d5d0adab1ae378d7f53bdebc67a39f1f151407ef230f0ce2883572f5d8985c80"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -648,7 +648,7 @@ dependencies = [
 
 [[package]]
 name = "tskit"
-version = "0.15.0-alpha.1"
+version = "0.15.0-alpha.2"
 dependencies = [
  "anyhow",
  "bincode",
diff --git a/Cargo.toml b/Cargo.toml
index 297afd9b..4bbc0739 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -25,7 +25,7 @@ libc = "0.2.155"
 streaming-iterator = "0.1.5"
 bitflags = "2.6.0"
 humantime = {version = "2.1.0", optional = true}
-serde = {version = "1.0.203", features = ["derive"], optional = true}
+serde = {version = "1.0.217", features = ["derive"], optional = true}
 serde_json = {version = "1.0.120", optional = true}
 bincode = {version = "1.3.1", optional = true}
 tskit-derive = {version = "0.2.0", path = "tskit-derive", optional = true}
@@ -34,7 +34,7 @@ delegate = "0.12.0"
 [dev-dependencies]
 anyhow = {version = "1.0.86"}
 clap = {version = "4.4.6", features = ["derive"]}
-serde = {version = "1.0.203", features = ["derive"]}
+serde = {version = "1.0.217", features = ["derive"]}
 serde-pickle = "1.1.0"
 serde_json = {version = "1.0.120"}
 bincode = "1.3.1"