diff --git a/mingw-w64-sundials/0001-fix-nvecpthreads-link-libs.patch b/mingw-w64-sundials/0001-fix-nvecpthreads-link-libs.patch
deleted file mode 100644
index a888e5d829..0000000000
--- a/mingw-w64-sundials/0001-fix-nvecpthreads-link-libs.patch
+++ /dev/null
@@ -1,11 +0,0 @@
---- a/src/nvector/pthreads/CMakeLists.txt
-+++ b/src/nvector/pthreads/CMakeLists.txt
-@@ -34,6 +34,8 @@
-     ${nveclib_SOVERSION}
- )
- 
-+target_link_libraries(sundials_nvecpthreads${_SHARED_LIB_SUFFIX} Threads::Threads)
-+
- message(STATUS "Added NVECTOR_PTHREADS module")
- 
- # Add F2003 module if the interface is enabled
diff --git a/mingw-w64-sundials/PKGBUILD b/mingw-w64-sundials/PKGBUILD
index 6cf5decaad..e6736ddd6f 100644
--- a/mingw-w64-sundials/PKGBUILD
+++ b/mingw-w64-sundials/PKGBUILD
@@ -3,7 +3,7 @@
 _realname=sundials
 pkgbase="mingw-w64-${_realname}"
 pkgname="${MINGW_PACKAGE_PREFIX}-${_realname}"
-pkgver=6.5.0
+pkgver=6.5.1
 pkgrel=1
 pkgdesc="SUite of Nonlinear and DIfferential/ALgebraic equation Solvers (mingw-w64)"
 arch=('any')
@@ -24,18 +24,15 @@ makedepends=("${MINGW_PACKAGE_PREFIX}-cc"
 optdepends=("${MINGW_PACKAGE_PREFIX}-python: for running examples")
 conflicts=("${MINGW_PACKAGE_PREFIX}-cvode")
 source=(https://github.com/LLNL/sundials/releases/download/v${pkgver}/${_realname}-${pkgver}.tar.gz
-        '0001-fix-nvecpthreads-link-libs.patch'
         '0002-sundials-missing-export.patch'
         '0003-sundials-use-default-installdirs.patch'
         '0008-sundials-petsc-pkg-config-module.patch')
-sha256sums=('4e0b998dff292a2617e179609b539b511eb80836f5faacf800e688a886288502'
-            '47420e76a4c98d938ba0802048f44e39ecb14cc7d41e88b19d56b456a3af00f8'
+sha256sums=('4252303805171e4dbdd19a01e52c1dcfe0dafc599c3cfedb0a5c2ffb045a8a75'
             '7f119fbcc8a630a4e3443e3bba252dafb4b1567ced1bf1389052253529e97ddc'
             '310b9beb86426fd2f817391baf72c0f9aefe9dc31e737daed5cc0280b7693311'
             'd4a56ef02d87d8d17970733fe8391c12fea9465f093681a1091a24b2ad0a787a')
 
 prepare() {
-  patch -d ${_realname}-${pkgver} -p1 < 0001-fix-nvecpthreads-link-libs.patch
   patch -d ${_realname}-${pkgver} -p1 < 0002-sundials-missing-export.patch
   patch -d ${_realname}-${pkgver} -p1 < 0003-sundials-use-default-installdirs.patch
   patch -d ${_realname}-${pkgver} -p1 < 0008-sundials-petsc-pkg-config-module.patch
@@ -54,7 +51,7 @@ build() {
   fi
 
   if [[ ${MINGW_PACKAGE_PREFIX} == *-clang-* ]]; then
-    export FFLAGS="-flang-experimental-exec -Qunused-arguments"
+    export FFLAGS="-Qunused-arguments"
   fi
 
   I_MPI_ROOT="" \