diff --git a/extra/valgrind/PKGBUILD b/extra/valgrind/PKGBUILD
index 1da3cd408..7bb1fab7b 100644
--- a/extra/valgrind/PKGBUILD
+++ b/extra/valgrind/PKGBUILD
@@ -11,7 +11,7 @@ buildarch=12
 noautobuild=1
 
 pkgname=valgrind
-pkgver=3.17.0
+pkgver=3.18.1
 pkgrel=1
 pkgdesc='Tool to help find memory-management problems in programs'
 arch=('x86_64')
@@ -29,16 +29,17 @@ source=(https://sourceware.org/pub/valgrind/valgrind-${pkgver}.tar.bz2{,.asc}
         valgrind-3.13.0-arm64-hwcap.patch)
 validpgpkeys=(
   0E9FFD0C16A1856CF9C7C690BA0166E698FA6035 # Julian Seward <jseward@acm.org>
+  EC3CFE88F6CA0788774F5C1D1AA44BE649DE760A # Mark Wielaard <mjw@gnu.org>
 )
-sha512sums=('94de78942a7059e1ab84d1c0c0b8f3efd1c2d15c70b97bc7edc8136812778adb6f8187149d53a60a8c6a7c8b40534f9be5cfed0eb3c0c314545b681f950b108f'
+sha512sums=('a03b5cd7eafab4a1cea07f46464c1546ae1cb3d106649626b1e55658badf90e58d1f3854a38a33d5dffd8237f5555ae7e1f27a4b40e06254f87825c7fc61b59b'
             'SKIP'
             'e0cec39381cefeca09ae4794cca309dfac7c8693e6315e137e64f5c33684598726d41cfbb4edf764fe985503b13ff596184ca5fc32b159d500ec092e4cf8838c'
             '5af853399c6abdf8016fd1c2be854b3952b7d7e9ca16c870f84eed72e606e639d5f64de32e60105899f5201b53156380ae460111e05209e843301492742c9bfd')
-b2sums=('96569db9bc3c25ca195a4caa64da6e96b9bff7edd82727fccccaa8307162e29f4e150386c7c9611152fc1afde609d0922aa84067957b72dff03810ee23045e9c'
+b2sums=('a98322e4c12ae1bc495659217bd398b85e459288e775ba5f543b9ce1faa5bdfc17791178c0e7b9703a31588cc4c7cbde814b7a43b2ec76e7362e2aeeb100d935'
         'SKIP'
         'af556fdf3c02e37892bfe9afebc954cf2f1b2fa9b75c1caacfa9f3b456ebc02bf078475f9ee30079b3af5d150d41415a947c3d04235c1ea8412cf92b959c484a'
         'ff8cf51a6034c13ffbc412c387e83a32fa59f96e01be8faf6b52aa6d55bd5e5836c16d75f2291d87450709d0c75689b21870514006c603c6419940a9b977e609')
-
+options=(!lto) # https://bugs.kde.org/show_bug.cgi?id=338252
 
 prepare() {
   cd valgrind-${pkgver}
diff --git a/extra/valgrind/valgrind-3.16-openmpi-4.0.patch b/extra/valgrind/valgrind-3.16-openmpi-4.0.patch
deleted file mode 100644
index 084ba67b3..000000000
--- a/extra/valgrind/valgrind-3.16-openmpi-4.0.patch
+++ /dev/null
@@ -1,67 +0,0 @@
-From a3262243ca01f7cfe3ae86b168d5b3a7e5d1cbc0 Mon Sep 17 00:00:00 2001
-From: Balint Reczey <balint.reczey@canonical.com>
-Date: Thu, 28 Nov 2019 19:31:12 +0100
-Subject: [PATCH] Drop MPI 1 support
-
-Signed-off-by: Balint Reczey <balint.reczey@canonical.com>
----
- mpi/libmpiwrap.c | 16 ++--------------
- 1 file changed, 2 insertions(+), 14 deletions(-)
-
-diff --git a/mpi/libmpiwrap.c b/mpi/libmpiwrap.c
-index 488bb13fd..a740ea562 100644
---- a/mpi/libmpiwrap.c
-+++ b/mpi/libmpiwrap.c
-@@ -278,8 +278,6 @@ static void showTy ( FILE* f, MPI_Datatype ty )
-    else if (ty == MPI_LONG_INT)       fprintf(f,"LONG_INT");
-    else if (ty == MPI_SHORT_INT)      fprintf(f,"SHORT_INT");
-    else if (ty == MPI_2INT)           fprintf(f,"2INT");
--   else if (ty == MPI_UB)             fprintf(f,"UB");
--   else if (ty == MPI_LB)             fprintf(f,"LB");
- #  if defined(MPI_WCHAR)
-    else if (ty == MPI_WCHAR)          fprintf(f,"WCHAR");
- #  endif
-@@ -350,20 +348,11 @@ static void showCombiner ( FILE* f, int combiner )
- #     endif
-       case MPI_COMBINER_CONTIGUOUS:  fprintf(f, "CONTIGUOUS"); break;
-       case MPI_COMBINER_VECTOR:      fprintf(f, "VECTOR"); break;
--#if   defined(MPI_COMBINER_HVECTOR_INTEGER)
--      case MPI_COMBINER_HVECTOR_INTEGER: fprintf(f, "HVECTOR_INTEGER"); break;
--#     endif
-       case MPI_COMBINER_HVECTOR:     fprintf(f, "HVECTOR"); break;
-       case MPI_COMBINER_INDEXED:     fprintf(f, "INDEXED"); break;
--#if   defined(MPI_COMBINER_HINDEXED_INTEGER)
--      case MPI_COMBINER_HINDEXED_INTEGER: fprintf(f, "HINDEXED_INTEGER"); break;
--#     endif
-       case MPI_COMBINER_HINDEXED:    fprintf(f, "HINDEXED"); break;
- #if   defined(MPI_COMBINER_INDEXED_BLOCK)
-       case MPI_COMBINER_INDEXED_BLOCK: fprintf(f, "INDEXED_BLOCK"); break;
--#     endif
--#if   defined(MPI_COMBINER_STRUCT_INTEGER)
--      case MPI_COMBINER_STRUCT_INTEGER: fprintf(f, "STRUCT_INTEGER"); break;
- #     endif
-       case MPI_COMBINER_STRUCT:      fprintf(f, "STRUCT"); break;
- #if   defined(MPI_COMBINER_SUBARRAY)
-@@ -458,8 +447,9 @@ Bool isMSI ( MPI_Status* status )
- static long extentOfTy ( MPI_Datatype ty )
- {
-    int      r;
-+   MPI_Aint lb;
-    MPI_Aint n;
--   r = PMPI_Type_extent(ty, &n);
-+   r = MPI_Type_get_extent(ty, &lb, &n);
-    assert(r == MPI_SUCCESS);
-    return (long)n;
- }
-@@ -733,8 +723,6 @@ void walk_type ( void(*f)(void*,long), char* base, MPI_Datatype ty )
-          f(base + offsetof(Ty,loc), sizeof(int));
-          return;
-       }
--      if (ty == MPI_LB || ty == MPI_UB)
--         return; /* have zero size, so nothing needs to be done */
-       goto unhandled;
-       /*NOTREACHED*/
-    }
--- 
-2.17.1
-