diff --git a/Cargo.lock b/Cargo.lock
index 2467f5d2..eeba8685 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1146,21 +1146,21 @@ dependencies = [
 
 [[package]]
 name = "magnus"
-version = "0.7.1"
+version = "0.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3d87ae53030f3a22e83879e666cb94e58a7bdf31706878a0ba48752994146dab"
+checksum = "bd2ac6e71886be00ac34db92aa732c793c5107c95191805b9a1c7e70e6d342e0"
 dependencies = [
  "magnus-macros",
  "rb-sys",
- "rb-sys-env 0.1.2",
+ "rb-sys-env",
  "seq-macro",
 ]
 
 [[package]]
 name = "magnus-macros"
-version = "0.6.0"
+version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5968c820e2960565f647819f5928a42d6e874551cab9d88d75e3e0660d7f71e3"
+checksum = "47607461fd8e1513cb4f2076c197d8092d921a1ea75bd08af97398f593751892"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1435,12 +1435,6 @@ dependencies = [
  "syn",
 ]
 
-[[package]]
-name = "rb-sys-env"
-version = "0.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a35802679f07360454b418a5d1735c89716bde01d35b1560fc953c1415a0b3bb"
-
 [[package]]
 name = "rb-sys-env"
 version = "0.2.2"
@@ -2319,7 +2313,7 @@ dependencies = [
  "lazy_static",
  "magnus",
  "rb-sys",
- "rb-sys-env 0.2.2",
+ "rb-sys-env",
  "static_assertions",
  "tokio",
  "wasmtime",
diff --git a/ext/Cargo.toml b/ext/Cargo.toml
index 24fb0a9c..cd915af4 100644
--- a/ext/Cargo.toml
+++ b/ext/Cargo.toml
@@ -20,7 +20,7 @@ winch = ["wasmtime/winch"]
 async-trait = "*" # Needed for `OutputLimitedBuffer`. Use wasmtime's version.
 bytes = "*" # Needed for `OutputLimitedBuffer`. Use wasmtime's version.
 lazy_static = "1.5.0"
-magnus = { version = "0.7", features = ["rb-sys"] }
+magnus = { version = "0.8", features = ["rb-sys"] }
 rb-sys = { version = "*", default-features = false, features = [
   "stable-api-compiled-fallback",
 ] }