diff --git a/Cargo.lock b/Cargo.lock
index 60af4176..29aa13c7 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -255,9 +255,9 @@ checksum = "773648b94d0e5d620f64f280777445740e61fe701025087ec8b57f45c791888b"
 
 [[package]]
 name = "ctor"
-version = "0.12.0"
+version = "1.0.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b8f521dd9c9e5f03986eb5c674b14b21e9ccf2eb9f98fecb681100214d5e9e4f"
+checksum = "01334b89b69ff726750c5ce5073fc8bd860e99aa9a8fc5ca11b04730e3aee97a"
 dependencies = [
  "link-section",
  "linktime-proc-macro",
@@ -486,15 +486,15 @@ checksum = "68ab91017fe16c622486840e4c83c9a37afeff978bd239b5293d61ece587de66"
 
 [[package]]
 name = "link-section"
-version = "0.12.0"
+version = "0.18.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0567ec9fe5ffdf9241cd90a7629f250a5f903d6ff4573cf7903308662d6fce40"
+checksum = "014e440054ce8170890229eeef5bcda955305e056ec713de40ed366944483f09"
 
 [[package]]
 name = "linktime-proc-macro"
-version = "0.1.0"
+version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a44cd706ff0d503ee32b2071166510ca27e281228de10cd3aa8d35ff94560f81"
+checksum = "8c7b0a3383c2a1002d11349c92c85a666a5fb679e96c79d782cf0dbe557fd6ee"
 
 [[package]]
 name = "linux-raw-sys"
diff --git a/Cargo.toml b/Cargo.toml
index d0eb1569..132c7ba2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -17,7 +17,7 @@ license = "Apache-2.0"
 alioth = { path = "alioth", version = "0.12.0" }
 alioth-macros = { path = "alioth-macros", version = "0.12.0" }
 assert_matches = "1"
-ctor = "0.12"
+ctor = "1.0"
 flexi_logger = "0.31"
 flume = "0.12.0"
 parking_lot = { version = "0.12", features = ["hardware-lock-elision"] }
diff --git a/alioth-cli/src/main.rs b/alioth-cli/src/main.rs
index ff30f9ea..4f27d2c7 100644
--- a/alioth-cli/src/main.rs
+++ b/alioth-cli/src/main.rs
@@ -89,7 +89,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
 }
 
 #[cfg(test)]
-#[ctor::ctor]
+#[ctor::ctor(unsafe)]
 fn global_setup() {
     flexi_logger::init();
 }
diff --git a/alioth/src/lib.rs b/alioth/src/lib.rs
index 5e393c5e..c479e951 100644
--- a/alioth/src/lib.rs
+++ b/alioth/src/lib.rs
@@ -50,7 +50,7 @@ pub mod virtio;
 pub mod vm;
 
 #[cfg(test)]
-#[ctor::ctor]
+#[ctor::ctor(unsafe)]
 fn global_setup() {
     flexi_logger::init();
 }