diff --git a/academic/OpenVSP/OpenVSP.SlackBuild b/academic/OpenVSP/OpenVSP.SlackBuild
index c2133d3f4b..9cade4a39e 100644
--- a/academic/OpenVSP/OpenVSP.SlackBuild
+++ b/academic/OpenVSP/OpenVSP.SlackBuild
@@ -25,7 +25,7 @@
 cd $(dirname $0) ; CWD=$(pwd)
 
 PRGNAM=OpenVSP
-VERSION=${VERSION:-3.30.0}
+VERSION=${VERSION:-3.31.1}
 BUILD=${BUILD:-1}
 TAG=${TAG:-_SBo}
 PKGTYPE=${PKGTYPE:-tgz}
@@ -70,7 +70,7 @@ rm -rf $PKG
 mkdir -p $TMP $PKG $OUTPUT
 cd $TMP
 rm -rf ${PRGNAM}-${PRGNAM}_$VERSION
-tar -xvf $CWD/${PRGNAM}-${PRGNAM}_$VERSION.tar.gz
+tar -xvf $CWD/${PRGNAM}_$VERSION.tar.gz || tar -xvf $CWD/${PRGNAM}-${PRGNAM}_$VERSION.tar.gz
 cd $PRGNAM-${PRGNAM}_$VERSION
 chown -R root:root .
 find -L . \
@@ -93,8 +93,9 @@ cd buildlibs
   -DVSP_USE_SYSTEM_CODEELI=false \
   -DVSP_USE_SYSTEM_CPPTEST=false \
   -DCMAKE_BUILD_TYPE=Release \
+  -Wno-dev \
   ../Libraries
-  make -j1 # parallel builds broken
+  make
 
 cd ../build
   cmake \
@@ -102,7 +103,8 @@ cd ../build
     -DCMAKE_CXX_FLAGS:STRING="$SLKCFLAGS" \
     -DVSP_LIBRARY_PATH=$TMP/${PRGNAM}-${PRGNAM}_$VERSION/buildlibs \
     -DCMAKE_INSTALL_PREFIX=/opt/$PRGNAM \
-    -DCMAKE_BUILD_TYPE=Release ..
+    -DCMAKE_BUILD_TYPE=Release \
+    -Wno-dev ..
   make
   make install DESTDIR=$PKG
 cd ..
diff --git a/academic/OpenVSP/OpenVSP.info b/academic/OpenVSP/OpenVSP.info
index c45675275d..b5796bb217 100644
--- a/academic/OpenVSP/OpenVSP.info
+++ b/academic/OpenVSP/OpenVSP.info
@@ -1,8 +1,8 @@
 PRGNAM="OpenVSP"
-VERSION="3.30.0"
+VERSION="3.31.1"
 HOMEPAGE="http://openvsp.org"
-DOWNLOAD="https://github.com/OpenVSP/OpenVSP/archive/refs/tags/OpenVSP_3.30.0/OpenVSP-OpenVSP_3.30.0.tar.gz"
-MD5SUM="c7d5a37b9369f03b05b1844c26d8d2ab"
+DOWNLOAD="https://github.com/OpenVSP/OpenVSP/archive/refs/tags/OpenVSP_3.31.1/OpenVSP_3.31.1.tar.gz"
+MD5SUM="5267cdc9d1c6050fd0b8bc963e179b87"
 DOWNLOAD_x86_64=""
 MD5SUM_x86_64=""
 REQUIRES="fltk"