diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2b9b46f7..5bdc3086 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -116,7 +116,7 @@ jobs:
       - name: Install cargo-valgrind
         run: cargo install cargo-valgrind
       - name: Run --lib tests under valgrind
-        run: cargo valgrind test --lib
+        run: VALGRINDFLAGS="--suppressions=script/valgrind.supp" cargo valgrind test --lib
 
   gdal_static:
     name: "ci gdal-static"
diff --git a/Cargo.toml b/Cargo.toml
index 0b259ffa..af9daba9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -11,6 +11,7 @@ categories = ["science::geo", "api-bindings"]
 repository = "https://github.com/georust/gdal"
 edition = "2021"
 rust-version = "1.80"
+exclude = ["script"]
 
 [features]
 default = []
diff --git a/script/valgrind.supp b/script/valgrind.supp
new file mode 100644
index 00000000..77ef314d
--- /dev/null
+++ b/script/valgrind.supp
@@ -0,0 +1,32 @@
+{
+   <rust_1_83_leak_fedora_41>
+   Memcheck:Leak
+   match-leak-kinds: possible
+   fun:malloc
+   fun:alloc
+   fun:alloc_impl
+   fun:allocate
+   fun:{closure#0}<std::thread::Inner>
+   fun:allocate_for_layout<core::mem::maybe_uninit::MaybeUninit<std::thread::Inner>, alloc::sync::{impl#14}::new_uninit::{closure_env#0}<std::thread::Inner>, fn(*mut u8) -> *mut alloc::sync::ArcInner<core::mem::maybe_uninit::MaybeUninit<std::thread::Inner>>>
+   fun:new_uninit<std::thread::Inner>
+   fun:new_inner
+   fun:new_main
+   fun:init
+   fun:{closure#0}
+   fun:do_call<std::rt::lang_start_internal::{closure_env#0}, ()>
+   fun:try<(), std::rt::lang_start_internal::{closure_env#0}>
+   fun:catch_unwind<std::rt::lang_start_internal::{closure_env#0}, ()>
+   fun:_ZN3std2rt19lang_start_internal17h1c66660c99c8424cE
+   fun:_ZN3std2rt10lang_start17h487d345476bc1d6fE
+   fun:main
+}
+{
+   <rust_1_83_leak_ubuntu_22_04>
+   Memcheck:Leak
+   match-leak-kinds: possible
+   fun:malloc
+   fun:_ZN3std2rt19lang_start_internal17h1c66660c99c8424cE
+   fun:_ZN3std2rt10lang_start17h487d345476bc1d6fE
+   fun:main
+}
+