diff --git a/CMake/fletch-tarballs.cmake b/CMake/fletch-tarballs.cmake
index d67cb649..d99bf445 100644
--- a/CMake/fletch-tarballs.cmake
+++ b/CMake/fletch-tarballs.cmake
@@ -612,9 +612,9 @@ set(Darnet_dlname "darknent-d206b6da7af1f4.zip")
 list(APPEND fletch_external_sources Darknet)
 
 # pybind11
-set(pybind11_version "2.5.0")
+set(pybind11_version "2.8.1")
 set(pybind11_url "https://github.com/pybind/pybind11/archive/v${pybind11_version}.tar.gz")
-set(pybind11_md5 "1ad2c611378fb440e8550a7eb6b31b89")
+set(pybind11_md5 "06d173fb97f1d2d804d318e47f924892")
 set(pybind11_dlname "pybind11-${pybind11_version}.tar.gz")
 list(APPEND fletch_external_sources pybind11)