diff --git a/libafl_bolts/Cargo.toml b/libafl_bolts/Cargo.toml
index dfffb75edf..199c81fdd9 100644
--- a/libafl_bolts/Cargo.toml
+++ b/libafl_bolts/Cargo.toml
@@ -141,7 +141,7 @@ num_enum = { workspace = true, default-features = false }
 ahash = { workspace = true, optional = true } # The hash function already used in hashbrown
 backtrace = { workspace = true, default-features = true, optional = true } # Used to get the stacktrace in StacktraceObserver
 
-ctor = { optional = true, version = "0.2.9" }
+ctor = { optional = true, version = "0.4.0" }
 miniz_oxide = { version = "0.8.0", optional = true }
 hostname = { version = "0.4.0", optional = true } # Is there really no gethostname in the stdlib?
 rand_core = { version = "0.9.0", optional = true }
diff --git a/libafl_bolts/src/lib.rs b/libafl_bolts/src/lib.rs
index 6207d65f1e..7281353058 100644
--- a/libafl_bolts/src/lib.rs
+++ b/libafl_bolts/src/lib.rs
@@ -77,7 +77,7 @@ pub extern crate alloc;
 
 #[cfg(feature = "ctor")]
 #[doc(hidden)]
-pub use ctor::ctor;
+pub use ctor;
 #[cfg(feature = "alloc")]
 pub mod anymap;
 #[cfg(feature = "std")]
diff --git a/libafl_bolts/src/serdeany.rs b/libafl_bolts/src/serdeany.rs
index 14be4c4864..6fc23087b4 100644
--- a/libafl_bolts/src/serdeany.rs
+++ b/libafl_bolts/src/serdeany.rs
@@ -840,17 +840,17 @@ impl<'de> Deserialize<'de> for Box<dyn crate::serdeany::SerdeAny> {
 #[macro_export]
 macro_rules! create_register {
     ($struct_type:ty) => {
-        const _: () = {
+        $crate::ctor::declarative::ctor! {
             /// Automatically register this type
-            #[$crate::ctor]
-            fn register() {
+            #[ctor(anonymous)]
+            unsafe fn register() {
                 // # Safety
                 // This `register` call will always run at startup and never in parallel.
                 unsafe {
                     $crate::serdeany::RegistryBuilder::register::<$struct_type>();
                 }
             }
-        };
+        }
     };
 }
 
diff --git a/libafl_concolic/symcc_runtime/Cargo.toml b/libafl_concolic/symcc_runtime/Cargo.toml
index a0f91e025e..4ac7c162f9 100644
--- a/libafl_concolic/symcc_runtime/Cargo.toml
+++ b/libafl_concolic/symcc_runtime/Cargo.toml
@@ -36,7 +36,7 @@ libafl = { workspace = true, features = ["std", "serdeany_autoreg"] }
 libafl_bolts = { workspace = true, features = ["std", "serdeany_autoreg"] }
 
 unchecked_unwrap = "4.0.0"
-ctor = "0.2.9"
+ctor = "0.4.0"
 libc = { workspace = true }
 
 [build-dependencies]
diff --git a/utils/noaslr/libnoaslr/Cargo.toml b/utils/noaslr/libnoaslr/Cargo.toml
index ed1be271be..9a5fe8cdb0 100644
--- a/utils/noaslr/libnoaslr/Cargo.toml
+++ b/utils/noaslr/libnoaslr/Cargo.toml
@@ -12,7 +12,7 @@ crate-type = ["dylib"]
 
 [dependencies]
 anyhow = { version = "1.0", default-features = false }
-ctor = { version = "0.2.9", default-features = false }
+ctor = "0.4.0"
 nix = { version = "0.29", default-features = false, features = [
   "process",
   "personality",