diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 130dca1d..a3c6c085 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -53,6 +53,7 @@ jobs:
           - "8.1"
           - "8.2"
           - "8.3"
+          - "8.4"
 
     runs-on: ${{ matrix.os }}
     steps:
diff --git a/README.md b/README.md
index 4e90b84b..6469444e 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@ The framework that allows us to write PHP extensions using pure and safe Rust wh
 
 ### Necessary
 
-- **rust** 1.65 or later
+- **rust** 1.79 or later
 - **libclang** 9.0 or later
 - **php** 7.0 or later
 
diff --git a/phper-sys/build.rs b/phper-sys/build.rs
index 597549c2..1cef6eb1 100644
--- a/phper-sys/build.rs
+++ b/phper-sys/build.rs
@@ -44,6 +44,10 @@ fn main() {
         .allowlist_file("php_wrapper\\.c")
         // Block the `zend_ini_parse_quantity` because it's document causes the doc test to fail.
         .blocklist_function("zend_ini_parse_quantity")
+        // Block the `zend_startup` because it fails checks.
+        .blocklist_function("zend_startup")
+        // Block the `zend_random_bytes_insecure` because it fails checks.
+        .blocklist_item("zend_random_bytes_insecure")
         .clang_args(&includes)
         .derive_default(true);
 
diff --git a/phper/Cargo.toml b/phper/Cargo.toml
index 0c5df9d4..241bded4 100644
--- a/phper/Cargo.toml
+++ b/phper/Cargo.toml
@@ -22,6 +22,7 @@ repository = { workspace = true }
 license = { workspace = true }
 
 [dependencies]
+cfg-if = "1.0.0"
 derive_more = "0.99.18"
 indexmap = "2.3.0"
 once_cell = "1.19.0"
diff --git a/phper/src/classes.rs b/phper/src/classes.rs
index 4661efbd..68166dd0 100644
--- a/phper/src/classes.rs
+++ b/phper/src/classes.rs
@@ -890,7 +890,25 @@ unsafe extern "C" fn create_object(ce: *mut zend_class_entry) -> *mut zend_objec
     let object = state_object.as_mut_object().as_mut_ptr();
     zend_object_std_init(object, ce);
     object_properties_init(object, ce);
-    rebuild_object_properties(object);
+
+    cfg_if::cfg_if! {
+        if #[cfg(any(
+            phper_major_version = "7",
+            all(
+                phper_major_version = "8",
+                any(
+                    phper_minor_version = "0",
+                    phper_minor_version = "1",
+                    phper_minor_version = "2",
+                    phper_minor_version = "3",
+                ),
+            )
+        ))] {
+            rebuild_object_properties(object);
+        } else {
+            rebuild_object_properties_internal(object);
+        }
+    }
 
     // Set handlers
     let mut handlers = Box::new(std_object_handlers);
diff --git a/phper/src/errors.rs b/phper/src/errors.rs
index aa50f831..bd8a1472 100644
--- a/phper/src/errors.rs
+++ b/phper/src/errors.rs
@@ -482,6 +482,7 @@ thread_local! {
 impl Default for ExceptionGuard {
     fn default() -> Self {
         EXCEPTION_STACK.with(|stack| unsafe {
+            #[allow(static_mut_refs)]
             stack
                 .borrow_mut()
                 .push(replace(&mut eg!(exception), null_mut()));
diff --git a/phper/src/functions.rs b/phper/src/functions.rs
index 9cfdfaf8..71dfc302 100644
--- a/phper/src/functions.rs
+++ b/phper/src/functions.rs
@@ -178,12 +178,14 @@ impl FunctionEntry {
 
         let flags = visibility.unwrap_or(Visibility::default() as u32);
 
+        #[allow(clippy::needless_update)]
         zend_function_entry {
             fname: name.as_ptr().cast(),
             handler: raw_handler,
             arg_info: Box::into_raw(infos.into_boxed_slice()).cast(),
             num_args: arguments.len() as u32,
             flags,
+            ..Default::default()
         }
     }
 
@@ -657,6 +659,7 @@ pub(crate) fn call_raw_common(call_fn: impl FnOnce(&mut ZVal)) -> crate::Result<
 
     unsafe {
         if !eg!(exception).is_null() {
+            #[allow(static_mut_refs)]
             let e = ptr::replace(&mut eg!(exception), null_mut());
             let obj = ZObject::from_raw(e);
             match ThrowObject::new(obj) {