diff --git a/Cargo.lock b/Cargo.lock
index 3e4389f..f6c426c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -172,22 +172,11 @@ checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
 
 [[package]]
 name = "bzip2"
-version = "0.4.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bdb116a6ef3f6c3698828873ad02c3014b3c85cadb88496095628e3ef1e347f8"
-dependencies = [
- "bzip2-sys",
- "libc",
-]
-
-[[package]]
-name = "bzip2-sys"
-version = "0.1.13+1.0.8"
+version = "0.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "225bff33b2141874fe80d71e07d6eec4f85c5c216453dd96388240f96e1acc14"
+checksum = "f3a53fac24f34a81bc9954b5d6cfce0c21e18ec6959f44f56e8e90e4bb7c346c"
 dependencies = [
- "cc",
- "pkg-config",
+ "libbz2-rs-sys",
 ]
 
 [[package]]
@@ -546,6 +535,12 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "09edd9e8b54e49e587e4f6295a7d29c3ea94d469cb40ab8ca70b288248a81db2"
 
+[[package]]
+name = "libbz2-rs-sys"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b3a6a8c165077efc8f3a971534c50ea6a1a18b329ef4a66e897a7e3a1494565f"
+
 [[package]]
 name = "libc"
 version = "0.2.182"
@@ -668,9 +663,9 @@ dependencies = [
 
 [[package]]
 name = "needletail"
-version = "0.6.3"
+version = "0.7.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6aa22e1ae8bce4ecf257e2475ef2046026caea08d66b1848d073fe7bc77e4351"
+checksum = "159c0519d18efd0c256a2284f396fa556c8f73a8572db1a3f7487921c26c76fa"
 dependencies = [
  "buffer-redux",
  "bytecount",
diff --git a/Cargo.toml b/Cargo.toml
index 0364abd..3ca2922 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -19,7 +19,7 @@ pyo3 = { version = "0.28", features = ["extension-module"] }
 # --no-default-features) can exclude it entirely.  emcc cannot link needletail
 # even without its C compression backends because it tries to produce a
 # standalone .wasm for every crate, which requires a `main` symbol.
-needletail = { version = "0.6", default-features = false, optional = true }
+needletail = { version = "0.7", default-features = false, optional = true }
 bio = "3.0"
 serde = { version = "1.0", features = ["derive"] }
 postcard = { version = "1", features = ["use-std"] }