diff --git a/ch04/global-vars/Cargo.lock b/ch04/global-vars/Cargo.lock
index 6bb0dba..7f4ea34 100644
--- a/ch04/global-vars/Cargo.lock
+++ b/ch04/global-vars/Cargo.lock
@@ -3,16 +3,16 @@
 version = 3
 
 [[package]]
-name = "autocfg"
-version = "1.4.0"
+name = "bitflags"
+version = "1.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ace50bade8e6234aa140d9a2f552bbee1db4d353f69b8217bc503490fc1a9f26"
+checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
 [[package]]
 name = "bitflags"
-version = "1.3.2"
+version = "2.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
+checksum = "812e12b5285cc515a9c72a5c1d3b6d46a19dac5acfef5265968c166106e31dd3"
 
 [[package]]
 name = "cfg-if"
@@ -26,6 +26,12 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fd16c4719339c4530435d38e511904438d07cce7950afa3718a84ac36c10e89e"
 
+[[package]]
+name = "cfg_aliases"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "613afe47fcd5fac7ccf1db93babcb082c5994d996f20b8b159f2ad1658eb5724"
+
 [[package]]
 name = "global-vars"
 version = "0.1.0"
@@ -35,15 +41,6 @@ dependencies = [
  "static_init",
 ]
 
-[[package]]
-name = "instant"
-version = "0.1.13"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e0242819d153cba4b4b05a5a8f2a7e9bbf97b6055b2a002b395c96b5ff3c0222"
-dependencies = [
- "cfg-if",
-]
-
 [[package]]
 name = "lazy_static"
 version = "1.5.0"
@@ -58,11 +55,10 @@ checksum = "561d97a539a36e26a9a5fad1ea11a3039a67714694aaa379433e580854bc3dc5"
 
 [[package]]
 name = "lock_api"
-version = "0.4.12"
+version = "0.4.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "07af8b9cdd281b7915f413fa73f29ebd5d55d0d3f0155584dade1ff18cea1b17"
+checksum = "224399e74b87b5f3557511d98dff8b14089b3dadafcab6bb93eab67d3aace965"
 dependencies = [
- "autocfg",
  "scopeguard",
 ]
 
@@ -80,27 +76,25 @@ checksum = "1261fe7e33c73b354eab43b1273a57c8f967d0391e80353e51f764ac02cf6775"
 
 [[package]]
 name = "parking_lot"
-version = "0.11.2"
+version = "0.12.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7d17b78036a60663b797adeaee46f5c9dfebb86948d1255007a1d6be0271ff99"
+checksum = "93857453250e3077bd71ff98b6a65ea6621a19bb0f559a85248955ac12c45a1a"
 dependencies = [
- "instant",
  "lock_api",
  "parking_lot_core",
 ]
 
 [[package]]
 name = "parking_lot_core"
-version = "0.8.6"
+version = "0.9.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "60a2cfe6f0ad2bfc16aefa463b497d5c7a5ecd44a23efa72aa342d90177356dc"
+checksum = "2621685985a2ebf1c516881c026032ac7deafcda1a2c9b7850dc81e3dfcb64c1"
 dependencies = [
  "cfg-if",
- "instant",
  "libc",
  "redox_syscall",
  "smallvec",
- "winapi",
+ "windows-link",
 ]
 
 [[package]]
@@ -123,11 +117,11 @@ dependencies = [
 
 [[package]]
 name = "redox_syscall"
-version = "0.2.16"
+version = "0.5.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fb5a58c1855b4b6819d59012155603f0b22ad30cad752600aadfcb695265519a"
+checksum = "ed2bf2547551a7053d6fdfafda3f938979645c44812fbfcda098faae3f1a362d"
 dependencies = [
- "bitflags",
+ "bitflags 2.10.0",
 ]
 
 [[package]]
@@ -144,12 +138,12 @@ checksum = "3c5e1a9a646d36c3599cd173a41282daf47c44583ad367b8e6837255952e5c67"
 
 [[package]]
 name = "static_init"
-version = "1.0.3"
+version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8a2a1c578e98c1c16fc3b8ec1328f7659a500737d7a0c6d625e73e830ff9c1f6"
+checksum = "8bae1df58c5fea7502e8e352ec26b5579f6178e1fdb311e088580c980dee25ed"
 dependencies = [
- "bitflags",
- "cfg_aliases",
+ "bitflags 1.3.2",
+ "cfg_aliases 0.2.1",
  "libc",
  "parking_lot",
  "parking_lot_core",
@@ -159,11 +153,11 @@ dependencies = [
 
 [[package]]
 name = "static_init_macro"
-version = "1.0.2"
+version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "70a2595fc3aa78f2d0e45dd425b22282dd863273761cc77780914b2cf3003acf"
+checksum = "1389c88ddd739ec6d3f8f83343764a0e944cd23cfbf126a9796a714b0b6edd6f"
 dependencies = [
- "cfg_aliases",
+ "cfg_aliases 0.1.1",
  "memchr",
  "proc-macro2",
  "quote",
@@ -208,3 +202,9 @@ name = "winapi-x86_64-pc-windows-gnu"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+
+[[package]]
+name = "windows-link"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f0805222e57f7521d6a62e36fa9163bc891acd422f971defe97d64e70d0a4fe5"
diff --git a/ch04/global-vars/Cargo.toml b/ch04/global-vars/Cargo.toml
index 741652d..07cc32b 100644
--- a/ch04/global-vars/Cargo.toml
+++ b/ch04/global-vars/Cargo.toml
@@ -9,4 +9,4 @@ rust-version = "1.70"
 [dependencies]
 lazy_static = "1.4.0"
 once_cell = "1.18.0"
-static_init = "1.0.3"
+static_init = "1.0.4"