diff --git a/Cargo.lock b/Cargo.lock
index a1748aa..69d12e0 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -28,7 +28,7 @@ dependencies = [
  "getrandom 0.2.15",
  "once_cell",
  "version_check",
- "zerocopy",
+ "zerocopy 0.7.35",
 ]
 
 [[package]]
@@ -1398,8 +1398,7 @@ dependencies = [
 [[package]]
 name = "object_store"
 version = "0.12.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e9ce831b09395f933addbc56d894d889e4b226eba304d4e7adbab591e26daf1e"
+source = "git+https://github.com/kylebarron/arrow-rs-object-store?rev=d1bd4fc8c05705c76a0145e38643bb6b2c267c11#d1bd4fc8c05705c76a0145e38643bb6b2c267c11"
 dependencies = [
  "async-trait",
  "base64",
@@ -1417,7 +1416,7 @@ dependencies = [
  "parking_lot",
  "percent-encoding",
  "quick-xml",
- "rand",
+ "rand 0.9.0",
  "reqwest",
  "ring",
  "rustls-pemfile",
@@ -1530,7 +1529,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3c80231409c20246a13fddb31776fb942c38553c51e871f8cbd687a4cfb5843d"
 dependencies = [
  "phf_shared",
- "rand",
+ "rand 0.8.5",
 ]
 
 [[package]]
@@ -1575,7 +1574,7 @@ version = "0.2.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "77957b295656769bb8ad2b6a6b09d897d94f05c41b069aede1fcdaa675eaea04"
 dependencies = [
- "zerocopy",
+ "zerocopy 0.7.35",
 ]
 
 [[package]]
@@ -1769,7 +1768,7 @@ checksum = "a2fe5ef3495d7d2e377ff17b1a8ce2ee2ec2a18cde8b6ad6619d65d0701c135d"
 dependencies = [
  "bytes",
  "getrandom 0.2.15",
- "rand",
+ "rand 0.8.5",
  "ring",
  "rustc-hash",
  "rustls",
@@ -1811,8 +1810,19 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
 dependencies = [
  "libc",
- "rand_chacha",
- "rand_core",
+ "rand_chacha 0.3.1",
+ "rand_core 0.6.4",
+]
+
+[[package]]
+name = "rand"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3779b94aeb87e8bd4e834cee3650289ee9e0d5677f976ecdb6d219e5f4f6cd94"
+dependencies = [
+ "rand_chacha 0.9.0",
+ "rand_core 0.9.3",
+ "zerocopy 0.8.24",
 ]
 
 [[package]]
@@ -1822,7 +1832,17 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
 dependencies = [
  "ppv-lite86",
- "rand_core",
+ "rand_core 0.6.4",
+]
+
+[[package]]
+name = "rand_chacha"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d3022b5f1df60f26e1ffddd6c66e8aa15de382ae63b3a0c1bfc0e4d3e3f325cb"
+dependencies = [
+ "ppv-lite86",
+ "rand_core 0.9.3",
 ]
 
 [[package]]
@@ -1834,6 +1854,15 @@ dependencies = [
  "getrandom 0.2.15",
 ]
 
+[[package]]
+name = "rand_core"
+version = "0.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "99d9a13982dcf210057a8a78572b2217b667c3beacbf3a0d8b454f6f82837d38"
+dependencies = [
+ "getrandom 0.3.1",
+]
+
 [[package]]
 name = "rawpointer"
 version = "0.2.1"
@@ -2879,7 +2908,16 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1b9b4fd18abc82b8136838da5d50bae7bdea537c574d8dc1a34ed098d6c166f0"
 dependencies = [
  "byteorder",
- "zerocopy-derive",
+ "zerocopy-derive 0.7.35",
+]
+
+[[package]]
+name = "zerocopy"
+version = "0.8.24"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2586fea28e186957ef732a5f8b3be2da217d65c5969d4b1e17f973ebbe876879"
+dependencies = [
+ "zerocopy-derive 0.8.24",
 ]
 
 [[package]]
@@ -2893,6 +2931,17 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "zerocopy-derive"
+version = "0.8.24"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a996a8f63c5c4448cd959ac1bab0aaa3306ccfd060472f85943ee0750f0169be"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "zerofrom"
 version = "0.1.6"
diff --git a/Cargo.toml b/Cargo.toml
index d9c0e97..fbf5e7d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -37,3 +37,6 @@ url = "2"
 [profile.release]
 lto = true
 codegen-units = 1
+
+[patch.crates-io]
+object_store = { git = 'https://github.com/kylebarron/arrow-rs-object-store', rev = "d1bd4fc8c05705c76a0145e38643bb6b2c267c11" }
diff --git a/obstore/python/obstore/_store/_gcs.pyi b/obstore/python/obstore/_store/_gcs.pyi
index 4f900e6..e4a2914 100644
--- a/obstore/python/obstore/_store/_gcs.pyi
+++ b/obstore/python/obstore/_store/_gcs.pyi
@@ -74,6 +74,14 @@ class GCSConfig(TypedDict, total=False):
     **Environment variable**: `GOOGLE_APPLICATION_CREDENTIALS`.
     """
 
+    skip_signature: bool
+    """If `True`, GCSStore will not fetch credentials and will not sign requests.
+
+    This can be useful when interacting with public GCS buckets that deny authorized requests.
+
+    **Environment variable**: `GOOGLE_SKIP_SIGNATURE`.
+    """
+
 class GCSCredential(TypedDict):
     """A Google Cloud Storage Credential.