diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 9fef0d8a..df12cab3 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -90,7 +90,7 @@ jobs:
           # (pushd tools && curl -L https://github.com/summerwind/h2spec/releases/download/v2.6.0/h2spec_linux_amd64.tar.gz | tar -xz && popd)
           # Uses https://github.com/summerwind/h2spec/pull/123, more precisely
           # https://github.com/fasterthanlime/h2spec/commit/72a6b9b2b01133d292bd74e019fde86c3638094a
-          (pushd tools && curl -L http://misc.fasterthanli.me.s3.amazonaws.com/h2spec -o h2spec && chmod +x h2spec && popd)
+          (pushd tools && curl -fL https://github.com/hapsoc/h2spec-binaries/releases/download/72a6b9b/h2spec -o h2spec && chmod +x h2spec && popd)
           just ci-test
           sccache --show-stats
       - name: Upload h2spec Report
diff --git a/crates/hring-bingo-ktls/Cargo.toml b/crates/hring-bingo-ktls/Cargo.toml
index f6dde171..e9a9f852 100644
--- a/crates/hring-bingo-ktls/Cargo.toml
+++ b/crates/hring-bingo-ktls/Cargo.toml
@@ -9,13 +9,13 @@ hring = { path = "../hring" }
 rcgen = "0.10.0"
 tracing = "0.1.37"
 tracing-subscriber = { version = "0.3.17", features = ["env-filter"] }
-rustls = { version = "0.21.1", features = ["secret_extraction"] }
+rustls = { version = "0.20.9", features = ["secret_extraction"] }
 tokio = { version = "1.28.2", features = ["full"] }
-tokio-rustls = "0.24.1"
+tokio-rustls = "0.23.4"
 http = "0.2.9"
 pretty-hex = "0.3.0"
 maybe-uring = { version = "0.1.0", path = "../maybe-uring" }
 socket2 = "0.5.3"
 
 [target.'cfg(target_os = "linux")'.dependencies]
-ktls = "3.0.0"
+ktls = "2.0.0"
diff --git a/crates/hring-h2spec/src/main.rs b/crates/hring-h2spec/src/main.rs
index 7c0e1198..9f8f4941 100644
--- a/crates/hring-h2spec/src/main.rs
+++ b/crates/hring-h2spec/src/main.rs
@@ -71,7 +71,7 @@ struct TestBody {
 }
 
 impl TestBody {
-    const CONTENTS: &str = "I am a test body";
+    const CONTENTS: &'static str = "I am a test body";
 }
 
 impl Body for TestBody {
diff --git a/crates/hring-hpack/src/huffman.rs b/crates/hring-hpack/src/huffman.rs
index 02f07d4c..10ceff75 100644
--- a/crates/hring-hpack/src/huffman.rs
+++ b/crates/hring-hpack/src/huffman.rs
@@ -63,7 +63,7 @@ impl HuffmanDecoder {
         for (symbol, &(code, code_len)) in table.iter().enumerate() {
             decoder_table
                 .entry(code_len)
-                .or_insert_with(Default::default);
+                .or_default();
             let subtable = decoder_table.get_mut(&code_len).unwrap();
             let huff_symbol = HuffmanCodeSymbol::new(symbol);
             if let HuffmanCodeSymbol::EndOfString = huff_symbol {
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index 817ffbb3..8059205a 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -1,3 +1,3 @@
 [toolchain]
-channel = "nightly-2023-06-14"
-components = ["llvm-tools-preview"]
\ No newline at end of file
+channel = "nightly-2023-09-13"
+components = ["llvm-tools-preview"]