diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index 3d7b6a394..475d2ed67 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -17,14 +17,14 @@ updates:
   - package-ecosystem: cargo
     directory: /
     schedule:
-      interval: weekly
+      interval: monthly
     commit-message:
       prefix: "chore(dependabot)"
       prefix-development: "chore(dependabot)"
     ignore:
       # Ignore dependencies listed in the depcheck tool
       #
-      # We do this to ensure that the versions are stable or manually updated for 
+      # We do this to ensure that the versions are stable or manually updated for
       # V8 / Chrome
       - dependency-name: "calendrical_calculations"
       - dependency-name: "core_maths"
diff --git a/Cargo.lock b/Cargo.lock
index 4489c74a8..cd0da93b3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -144,7 +144,7 @@ dependencies = [
  "prettyplease",
  "rustc-hash",
  "serde_json",
- "syn 2.0.118",
+ "syn 3.0.3",
  "timezone_provider",
  "zerovec",
 ]
@@ -682,12 +682,12 @@ dependencies = [
 
 [[package]]
 name = "prettyplease"
-version = "0.2.37"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "479ca8adacdd7ce8f1fb39ce9ecccbfe93a3f1344b3d0d97f20bc0196208f62b"
+checksum = "2bfe0f4c752e450fc2faf62654f1c134747922825d5b04ca717b8874f41a40c0"
 dependencies = [
  "proc-macro2",
- "syn 2.0.118",
+ "syn 3.0.3",
 ]
 
 [[package]]
diff --git a/tools/bakeddata/Cargo.toml b/tools/bakeddata/Cargo.toml
index c77539346..c3fec80e7 100644
--- a/tools/bakeddata/Cargo.toml
+++ b/tools/bakeddata/Cargo.toml
@@ -12,9 +12,9 @@ publish = false
 
 [dependencies]
 databake.workspace = true
-prettyplease = "0.2.37"
+prettyplease = "0.3"
 serde_json = "1.0.145"
-syn = "2.0.106"
+syn = "3.0"
 timezone_provider = { workspace = true, features = ["datagen"] }
 rustc-hash.workspace = true
 zerovec.workspace = true