diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b93834e..ad2741e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -20,7 +20,7 @@ jobs:
 
       - name: Setup rust tooling
         run: |
-          rustup override set 1.83
+          rustup override set 1.85
           rustup component add rustfmt clippy
 
       - uses: ./.github/actions/ci
@@ -49,7 +49,7 @@ jobs:
 
       - name: Setup rust tooling
         run: |
-          rustup override set 1.83
+          rustup override set 1.85
           rustup component add rustfmt clippy
           rustup target add x86_64-unknown-linux-musl
 
diff --git a/.github/workflows/manual-publish.yml b/.github/workflows/manual-publish.yml
index 9f350b0..6189f32 100644
--- a/.github/workflows/manual-publish.yml
+++ b/.github/workflows/manual-publish.yml
@@ -19,7 +19,7 @@ jobs:
 
       - name: Setup rust tooling
         run: |
-          rustup override set 1.83
+          rustup override set 1.85
           rustup component add rustfmt clippy
 
       - uses: ./.github/actions/ci
diff --git a/.github/workflows/release-please.yml b/.github/workflows/release-please.yml
index 2078f4c..c6dfe21 100644
--- a/.github/workflows/release-please.yml
+++ b/.github/workflows/release-please.yml
@@ -24,7 +24,7 @@ jobs:
       - name: Setup rust tooling
         if: ${{ steps.release.outputs['launchdarkly-server-sdk--release_created'] == 'true' }}
         run: |
-          rustup override set 1.83
+          rustup override set 1.85
           rustup component add rustfmt clippy
 
       - uses: launchdarkly/gh-actions/actions/release-secrets@release-secrets-v1.2.0
diff --git a/contract-tests/Cargo.toml b/contract-tests/Cargo.toml
index 228327a..1280612 100644
--- a/contract-tests/Cargo.toml
+++ b/contract-tests/Cargo.toml
@@ -2,7 +2,7 @@
 name = "contract-tests"
 version = "0.1.0"
 edition = "2021"
-rust-version = "1.83.0"  # MSRV
+rust-version = "1.85.0"  # MSRV
 license = "Apache-2.0"
 
 [dependencies]
diff --git a/launchdarkly-server-sdk/Cargo.toml b/launchdarkly-server-sdk/Cargo.toml
index fb86abf..443af84 100644
--- a/launchdarkly-server-sdk/Cargo.toml
+++ b/launchdarkly-server-sdk/Cargo.toml
@@ -4,7 +4,7 @@ description = "LaunchDarkly Server-Side SDK"
 version = "2.6.2"
 authors = ["LaunchDarkly"]
 edition = "2021"
-rust-version = "1.83.0"  # MSRV
+rust-version = "1.85.0"  # MSRV
 license = "Apache-2.0"
 homepage = "https://docs.launchdarkly.com/sdk/server-side/rust"
 repository = "https://github.com/launchdarkly/rust-server-sdk"
@@ -24,7 +24,7 @@ eventsource-client = { version = "0.16.0", default-features = false }
 futures = "0.3.12"
 lazy_static = "1.4.0"
 log = "0.4.14"
-lru = { version = "0.13.0", default-features = false }
+lru = { version = "0.16.3", default-features = false }
 launchdarkly-server-sdk-evaluation = "2.0.0"
 serde = { version = "1.0.132", features = ["derive"] }
 serde_json = { version = "1.0.73", features = ["float_roundtrip"] }