diff --git a/prism/ext/lpsolve55/bin/win64/lpsolve55.dll b/prism/ext/lpsolve55/bin/win64/lpsolve55.dll new file mode 100644 index 00000000..41bb8fb8 Binary files /dev/null and b/prism/ext/lpsolve55/bin/win64/lpsolve55.dll differ