diff --git a/H/HYPRE/build_tarballs.jl b/H/HYPRE/build_tarballs.jl
index 1c25f825113..3326213eb2c 100644
--- a/H/HYPRE/build_tarballs.jl
+++ b/H/HYPRE/build_tarballs.jl
@@ -6,20 +6,22 @@ const YGGDRASIL_DIR = "../.."
 include(joinpath(YGGDRASIL_DIR, "platforms", "mpi.jl"))
 
 name = "HYPRE"
-version = v"2.23.0"
+version = v"2.23.1"
+hypre_version = v"2.23.0"
 
 # Collection of sources required to complete build
 sources = [
-    ArchiveSource("https://github.com/hypre-space/hypre/archive/refs/tags/v$(version).tar.gz", "8a9f9fb6f65531b77e4c319bf35bfc9d34bf529c36afe08837f56b635ac052e2")
+    ArchiveSource("https://github.com/hypre-space/hypre/archive/refs/tags/v$(hypre_version).tar.gz",
+                  "8a9f9fb6f65531b77e4c319bf35bfc9d34bf529c36afe08837f56b635ac052e2")
 ]
 
 # Bash recipe for building across all platforms
 script = raw"""
 cd $WORKSPACE/srcdir/hypre-*
-cd src/
+cd src
 
 mkdir build
-cd build/
+cd build
 
 CMAKE_FLAGS=()
 
@@ -36,11 +38,6 @@ if [[ "$target" == x86_64-w64-mingw32 ]]; then
     fi
 fi
 
-# MPItrampoline requires C99 (but this doesn't work on Windows)
-if [[ "$target" != *-mingw32* ]]; then
-    export CFLAGS="${CFLAGS} -std=c99"
-fi
-
 cmake .. \
 -DCMAKE_INSTALL_PREFIX=$prefix \
 -DCMAKE_TOOLCHAIN_FILE=${CMAKE_TARGET_TOOLCHAIN} \