diff --git a/.gitignore b/.gitignore
index 1bc2069..e8c9165 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,4 @@
 /target
 **/*.rs.bk
-Cargo.lock
 .*
 !/.gitignore
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6b511b4..b13a807 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # Change Log
 
+## [Unreleased] - ReleaseDate
+
+- Updated version of `bindgen` to 0.65.
+- Use `pkg-config` in `build.rs` ([#1](https://github.com/Cykooz/libheif-sys/pull/1)).
+
 ## [1.14.2] - 2023-01-31
 
 - Updated version of `bindgen` to 0.63.0.
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..929d9ae
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,258 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "bindgen"
+version = "0.65.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cfdf7b466f9a4903edc73f95d6d2bcd5baf8ae620638762244d3f60143643cc5"
+dependencies = [
+ "bitflags",
+ "cexpr",
+ "clang-sys",
+ "lazy_static",
+ "lazycell",
+ "log",
+ "peeking_take_while",
+ "prettyplease",
+ "proc-macro2",
+ "quote",
+ "regex",
+ "rustc-hash",
+ "shlex",
+ "syn",
+ "which",
+]
+
+[[package]]
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+checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
+
+[[package]]
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+dependencies = [
+ "nom",
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+
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+checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
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+ "libloading",
+]
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+[[package]]
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+
+[[package]]
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+version = "1.14.2"
+dependencies = [
+ "bindgen",
+ "libc",
+ "pkg-config",
+]
+
+[[package]]
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+ "cfg-if",
+ "winapi",
+]
+
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+ "memchr",
+ "minimal-lexical",
+]
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+
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+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+ "syn",
+]
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+ "unicode-ident",
+]
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+ "proc-macro2",
+]
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+ "regex-syntax",
+]
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+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
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+
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+ "either",
+ "libc",
+ "once_cell",
+]
+
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+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
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diff --git a/Cargo.toml b/Cargo.toml
index 699ac1a..137e0e1 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -22,7 +22,7 @@ use-bindgen = ["bindgen"]
 
 
 [build-dependencies]
-bindgen = { version = "0.63.0", optional = true }
+bindgen = { version = "0.65", optional = true }
 pkg-config = "0.3.15"
 
 
diff --git a/README.md b/README.md
index 4304bbc..a701e54 100644
--- a/README.md
+++ b/README.md
@@ -10,15 +10,15 @@
 
 ```rust
 use std::ffi;
-use std::mem::MaybeUninit;
 use std::ptr;
 
 use libheif_sys as lh;
 
+#[test]
 fn read_and_decode_heic_file() {
     unsafe {
         lh::heif_init(ptr::null_mut());
-        
+
         let ctx = lh::heif_context_alloc();
         assert_ne!(ctx, ptr::null_mut());
 
@@ -26,11 +26,11 @@ fn read_and_decode_heic_file() {
         let err = lh::heif_context_read_from_file(ctx, c_name.as_ptr(), ptr::null());
         assert_eq!(err.code, 0);
 
-        let mut handle = MaybeUninit::<_>::uninit();
-        let err = lh::heif_context_get_primary_image_handle(ctx, handle.as_mut_ptr());
+        let mut handle = ptr::null_mut();
+        let err = lh::heif_context_get_primary_image_handle(ctx, &mut handle);
         assert_eq!(err.code, 0);
+        assert!(!handle.is_null());
 
-        let handle = handle.assume_init();
         let width = lh::heif_image_handle_get_width(handle);
         assert_eq!(width, 4032);
         let height = lh::heif_image_handle_get_height(handle);
@@ -38,18 +38,18 @@ fn read_and_decode_heic_file() {
 
         let options = lh::heif_decoding_options_alloc();
 
-        let mut image = MaybeUninit::<_>::uninit();
+        let mut image = ptr::null_mut();
         let err = lh::heif_decode_image(
             handle,
-            image.as_mut_ptr(),
+            &mut image,
             lh::heif_colorspace_heif_colorspace_RGB,
             lh::heif_chroma_heif_chroma_444,
             options,
         );
         lh::heif_decoding_options_free(options);
         assert_eq!(err.code, 0);
+        assert!(!image.is_null());
 
-        let image = image.assume_init();
         let colorspace = lh::heif_image_get_colorspace(image);
         assert_eq!(colorspace, lh::heif_colorspace_heif_colorspace_RGB);
         let chroma_format = lh::heif_image_get_chroma_format(image);
diff --git a/src/bindings.rs b/src/bindings.rs
index e8b610e..346b359 100644
--- a/src/bindings.rs
+++ b/src/bindings.rs
@@ -1,4 +1,4 @@
-/* automatically generated by rust-bindgen 0.63.0 */
+/* automatically generated by rust-bindgen 0.65.1 */
 
 extern "C" {
     pub fn heif_get_version() -> *const libc::c_char;
diff --git a/src/lib.rs b/src/lib.rs
index 69befdc..5bfb6e6 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,3 +1,4 @@
+#![doc = include_str!("../README.md")]
 #![allow(non_upper_case_globals)]
 #![allow(non_camel_case_types)]
 #![allow(non_snake_case)]
diff --git a/tests/integration_test.rs b/tests/integration_test.rs
index 13c092f..aa4d784 100644
--- a/tests/integration_test.rs
+++ b/tests/integration_test.rs
@@ -1,5 +1,3 @@
-use std::ffi;
-use std::mem::MaybeUninit;
 use std::ptr;
 
 use libheif_sys as lh;
@@ -10,60 +8,9 @@ fn create_heic_context() {
         lh::heif_init(ptr::null_mut());
 
         let ctx = lh::heif_context_alloc();
-        assert_ne!(ctx, ptr::null_mut());
+        assert!(!ctx.is_null());
         lh::heif_context_free(ctx);
 
         lh::heif_deinit();
     }
 }
-
-#[test]
-fn read_and_decode_heic_file() {
-    unsafe {
-        lh::heif_init(ptr::null_mut());
-
-        let ctx = lh::heif_context_alloc();
-        assert_ne!(ctx, ptr::null_mut());
-
-        let c_name = ffi::CString::new("tests/window.heic").unwrap();
-        let err = lh::heif_context_read_from_file(ctx, c_name.as_ptr(), ptr::null());
-        assert_eq!(err.code, 0);
-
-        let mut handle = MaybeUninit::<_>::uninit();
-        let err = lh::heif_context_get_primary_image_handle(ctx, handle.as_mut_ptr());
-        assert_eq!(err.code, 0);
-
-        let handle = handle.assume_init();
-        let width = lh::heif_image_handle_get_width(handle);
-        assert_eq!(width, 4032);
-        let height = lh::heif_image_handle_get_height(handle);
-        assert_eq!(height, 3024);
-
-        let options = lh::heif_decoding_options_alloc();
-
-        let mut image = MaybeUninit::<_>::uninit();
-        let err = lh::heif_decode_image(
-            handle,
-            image.as_mut_ptr(),
-            lh::heif_colorspace_heif_colorspace_RGB,
-            lh::heif_chroma_heif_chroma_444,
-            options,
-        );
-        lh::heif_decoding_options_free(options);
-        assert_eq!(err.code, 0);
-
-        let image = image.assume_init();
-        let colorspace = lh::heif_image_get_colorspace(image);
-        assert_eq!(colorspace, lh::heif_colorspace_heif_colorspace_RGB);
-        let chroma_format = lh::heif_image_get_chroma_format(image);
-        assert_eq!(chroma_format, lh::heif_chroma_heif_chroma_444);
-        let width = lh::heif_image_get_width(image, lh::heif_channel_heif_channel_R);
-        assert_eq!(width, 4032);
-        let height = lh::heif_image_get_height(image, lh::heif_channel_heif_channel_R);
-        assert_eq!(height, 3024);
-
-        lh::heif_context_free(ctx);
-
-        lh::heif_deinit();
-    };
-}