diff --git a/examples/constructor/src/builder.rs b/examples/constructor/src/builder.rs
index 344eae01c72..bf871191605 100644
--- a/examples/constructor/src/builder.rs
+++ b/examples/constructor/src/builder.rs
@@ -325,4 +325,8 @@ impl Calls {
     pub fn infinite_loop(self) -> Self {
         self.add_call(Call::Loop)
     }
+
+    pub fn system_reserve_gas(self, gas: impl Into<Arg<u64>>) -> Self {
+        self.add_call(Call::SystemReserveGas(gas.into()))
+    }
 }
diff --git a/examples/constructor/src/call.rs b/examples/constructor/src/call.rs
index 06c0fde0edb..2f14a20030c 100644
--- a/examples/constructor/src/call.rs
+++ b/examples/constructor/src/call.rs
@@ -42,6 +42,7 @@ pub enum Call {
     Wake(Arg<[u8; 32]>),
     MessageId,
     Loop,
+    SystemReserveGas(Arg<u64>),
 }
 
 #[cfg(not(feature = "wasm-wrapper"))]
@@ -317,6 +318,17 @@ mod wasm {
             Some(msg::id().encode())
         }
 
+        fn system_reserve_gas(self) -> Option<Vec<u8>> {
+            let Self::SystemReserveGas(gas) = self else {
+                unreachable!()
+            };
+
+            let gas = gas.value();
+            exec::system_reserve_gas(gas).expect("Failed to reserve gas");
+
+            None
+        }
+
         pub(crate) fn process(self, previous: Option<CallResult>) -> CallResult {
             debug!("\t[CONSTRUCTOR] >> Processing {self:?}");
             let call = self.clone();
@@ -347,6 +359,7 @@ mod wasm {
                 Call::MessageId => self.message_id(),
                 #[allow(clippy::empty_loop)]
                 Call::Loop => loop {},
+                Call::SystemReserveGas(..) => self.system_reserve_gas(),
             };
 
             (call, value)
diff --git a/examples/constructor/src/scheme/demo_exit_handle.rs b/examples/constructor/src/scheme/demo_exit_handle.rs
index a7b6a508057..4a6ba5a3fb2 100644
--- a/examples/constructor/src/scheme/demo_exit_handle.rs
+++ b/examples/constructor/src/scheme/demo_exit_handle.rs
@@ -22,6 +22,10 @@ pub fn handle_reply() -> Calls {
     Calls::builder().noop()
 }
 
+pub fn handle_signal() -> Calls {
+    Calls::builder().noop()
+}
+
 pub fn scheme() -> Scheme {
-    Scheme::predefined(init(), handle(), handle_reply())
+    Scheme::predefined(init(), handle(), handle_reply(), handle_signal())
 }
diff --git a/examples/constructor/src/scheme/demo_exit_init.rs b/examples/constructor/src/scheme/demo_exit_init.rs
index 74a6af4f6bf..9e191c164d4 100644
--- a/examples/constructor/src/scheme/demo_exit_init.rs
+++ b/examples/constructor/src/scheme/demo_exit_init.rs
@@ -29,6 +29,15 @@ pub fn handle_reply() -> Calls {
     Calls::builder().noop()
 }
 
+pub fn handle_signal() -> Calls {
+    Calls::builder().noop()
+}
+
 pub fn scheme(send_before_exit: bool) -> Scheme {
-    Scheme::predefined(init(send_before_exit), handle(), handle_reply())
+    Scheme::predefined(
+        init(send_before_exit),
+        handle(),
+        handle_reply(),
+        handle_signal(),
+    )
 }
diff --git a/examples/constructor/src/scheme/demo_ping.rs b/examples/constructor/src/scheme/demo_ping.rs
index c0601efbff5..d05bee2fa01 100644
--- a/examples/constructor/src/scheme/demo_ping.rs
+++ b/examples/constructor/src/scheme/demo_ping.rs
@@ -29,6 +29,10 @@ pub fn handle_reply() -> Calls {
     Calls::builder().noop()
 }
 
+pub fn handle_signal() -> Calls {
+    Calls::builder().noop()
+}
+
 pub fn scheme() -> Scheme {
-    Scheme::predefined(init(), handle(), handle_reply())
+    Scheme::predefined(init(), handle(), handle_reply(), handle_signal())
 }
diff --git a/examples/constructor/src/scheme/demo_proxy_with_gas.rs b/examples/constructor/src/scheme/demo_proxy_with_gas.rs
index 70b7e2a1ba5..7b893716d5e 100644
--- a/examples/constructor/src/scheme/demo_proxy_with_gas.rs
+++ b/examples/constructor/src/scheme/demo_proxy_with_gas.rs
@@ -65,6 +65,15 @@ pub fn handle_reply() -> Calls {
         )
 }
 
+pub fn handle_signal() -> Calls {
+    Calls::builder().noop()
+}
+
 pub fn scheme(destination: [u8; 32], delay: u32) -> Scheme {
-    Scheme::predefined(init(destination, delay), handle(), handle_reply())
+    Scheme::predefined(
+        init(destination, delay),
+        handle(),
+        handle_reply(),
+        handle_signal(),
+    )
 }
diff --git a/examples/constructor/src/scheme/demo_reply_deposit.rs b/examples/constructor/src/scheme/demo_reply_deposit.rs
index a7313e6b23a..5de12a39092 100644
--- a/examples/constructor/src/scheme/demo_reply_deposit.rs
+++ b/examples/constructor/src/scheme/demo_reply_deposit.rs
@@ -31,10 +31,15 @@ pub fn handle_reply(checker: [u8; 32]) -> Calls {
         .send_wgas(checker, Arg::bytes(SUCCESS_MESSAGE), 10_000)
 }
 
+pub fn handle_signal() -> Calls {
+    Calls::builder().noop()
+}
+
 pub fn scheme(checker: [u8; 32], destination: [u8; 32], gas_to_send: u64) -> Scheme {
     Scheme::predefined(
         init(),
         handle(destination, gas_to_send),
         handle_reply(checker),
+        handle_signal(),
     )
 }
diff --git a/examples/constructor/src/scheme/demo_wait_init_exit_reply.rs b/examples/constructor/src/scheme/demo_wait_init_exit_reply.rs
index bea2b68c1b6..e44eb574f62 100644
--- a/examples/constructor/src/scheme/demo_wait_init_exit_reply.rs
+++ b/examples/constructor/src/scheme/demo_wait_init_exit_reply.rs
@@ -42,6 +42,10 @@ pub fn handle_reply() -> Calls {
         .exit(source_var)
 }
 
+pub fn handle_signal() -> Calls {
+    Calls::builder().noop()
+}
+
 pub fn scheme() -> Scheme {
-    Scheme::predefined(init(), handle(), handle_reply())
+    Scheme::predefined(init(), handle(), handle_reply(), handle_signal())
 }
diff --git a/examples/constructor/src/scheme/mod.rs b/examples/constructor/src/scheme/mod.rs
index a13a3379d1a..280c5682875 100644
--- a/examples/constructor/src/scheme/mod.rs
+++ b/examples/constructor/src/scheme/mod.rs
@@ -26,7 +26,7 @@ pub enum Scheme {
     ///
     /// Better to use this scheme if you need common-purpose program that
     /// executes the same commands across different incoming payloads.
-    Predefined(Vec<Call>, Vec<Call>, Vec<Call>),
+    Predefined(Vec<Call>, Vec<Call>, Vec<Call>, Vec<Call>),
 }
 
 impl Scheme {
@@ -38,8 +38,18 @@ impl Scheme {
         Self::Direct(init.calls())
     }
 
-    pub fn predefined(init: Calls, handle: Calls, handle_reply: Calls) -> Self {
-        Self::Predefined(init.calls(), handle.calls(), handle_reply.calls())
+    pub fn predefined(
+        init: Calls,
+        handle: Calls,
+        handle_reply: Calls,
+        handle_signal: Calls,
+    ) -> Self {
+        Self::Predefined(
+            init.calls(),
+            handle.calls(),
+            handle_reply.calls(),
+            handle_signal.calls(),
+        )
     }
 
     pub fn init(&self) -> &Vec<Call> {
@@ -51,14 +61,21 @@ impl Scheme {
 
     pub fn handle(&self) -> Option<&Vec<Call>> {
         match self {
-            Self::Predefined(_, handle, _) => Some(handle),
+            Self::Predefined(_, handle, _, _) => Some(handle),
             _ => None,
         }
     }
 
     pub fn handle_reply(&self) -> Option<&Vec<Call>> {
         match self {
-            Self::Predefined(_, _, handle_reply) => Some(handle_reply),
+            Self::Predefined(_, _, handle_reply, _) => Some(handle_reply),
+            _ => None,
+        }
+    }
+
+    pub fn handle_signal(&self) -> Option<&Vec<Call>> {
+        match self {
+            Self::Predefined(_, _, _, handle_signal) => Some(handle_signal),
             _ => None,
         }
     }
diff --git a/examples/constructor/src/wasm.rs b/examples/constructor/src/wasm.rs
index 4461952ba8e..3848d0516ef 100644
--- a/examples/constructor/src/wasm.rs
+++ b/examples/constructor/src/wasm.rs
@@ -34,3 +34,8 @@ extern "C" fn handle() {
 extern "C" fn handle_reply() {
     process_fn(Scheme::handle_reply);
 }
+
+#[no_mangle]
+extern "C" fn handle_signal() {
+    process_fn(Scheme::handle_signal);
+}
diff --git a/pallets/gear/src/tests.rs b/pallets/gear/src/tests.rs
index 5ccae9dc5f5..7ad7c12cd46 100644
--- a/pallets/gear/src/tests.rs
+++ b/pallets/gear/src/tests.rs
@@ -167,7 +167,12 @@ fn value_counter_set_correctly_for_interruptions() {
         .send_value(Arg::new([0u8; 32]), Arg::new(vec![]), "value_store")
         .wait_for(1);
 
-    let scheme = Scheme::predefined(Calls::builder().noop(), handle, Calls::builder().noop());
+    let scheme = Scheme::predefined(
+        Calls::builder().noop(),
+        handle,
+        Calls::builder().noop(),
+        Calls::builder().noop(),
+    );
 
     init_logger();
     new_test_ext().execute_with(|| {
@@ -5937,7 +5942,12 @@ fn pause_terminated_exited_program() {
         let (_, terminated_pid) = submit_constructor_with_args(
             USER_1,
             DEFAULT_SALT,
-            Scheme::predefined(init, Default::default(), Default::default()),
+            Scheme::predefined(
+                init,
+                Default::default(),
+                Default::default(),
+                Default::default(),
+            ),
             0,
         );
 
@@ -8555,7 +8565,7 @@ fn demo_constructor_is_demo_ping() {
 
         let handle_reply = Calls::builder().panic("I don't like replies");
 
-        let scheme = Scheme::predefined(init, handle, handle_reply);
+        let scheme = Scheme::predefined(init, handle, handle_reply, Default::default());
 
         // checking init
         let (_init_mid, constructor_id) = utils::init_constructor(scheme);
@@ -14105,7 +14115,12 @@ fn double_read_works() {
             .load("read2")
             .bytes_eq("is_eq", "read1", "read2")
             .if_else("is_eq", noop_branch, panic_branch);
-        let predefined_scheme = Scheme::predefined(Default::default(), handle, Default::default());
+        let predefined_scheme = Scheme::predefined(
+            Default::default(),
+            handle,
+            Default::default(),
+            Default::default(),
+        );
 
         let (_, pid) = utils::init_constructor(predefined_scheme);
 
@@ -14334,7 +14349,7 @@ fn test_send_to_terminated_from_program() {
             // Using `USER_2` not to pollute `USER_1` mailbox to make test easier.
             USER_2,
             b"salt1",
-            Scheme::predefined(init, handle, Calls::default()),
+            Scheme::predefined(init, handle, Calls::default(), Calls::default()),
             0,
         );
 
@@ -14351,7 +14366,7 @@ fn test_send_to_terminated_from_program() {
             // Using `USER_2` not to pollute `USER_1` mailbox to make test easier.
             USER_2,
             b"salt2",
-            Scheme::predefined(Calls::default(), handle, handle_reply),
+            Scheme::predefined(Calls::default(), handle, handle_reply, Calls::default()),
             0,
         );
 
@@ -14650,7 +14665,7 @@ fn test_gas_info_of_terminated_program() {
         let (_, pid_dead) = utils::submit_constructor_with_args(
             USER_1,
             b"salt1",
-            Scheme::predefined(init_dead, handle_dead, Calls::default()),
+            Scheme::predefined(init_dead, handle_dead, Calls::default(), Calls::default()),
             0,
         );
 
@@ -14659,7 +14674,12 @@ fn test_gas_info_of_terminated_program() {
         let (_, proxy_pid) = utils::submit_constructor_with_args(
             USER_1,
             b"salt2",
-            Scheme::predefined(Calls::default(), handle_proxy, Calls::default()),
+            Scheme::predefined(
+                Calls::default(),
+                handle_proxy,
+                Calls::default(),
+                Calls::default(),
+            ),
             0,
         );