diff --git a/trajectory_native/build_ipopt.sh b/trajectory_native/build_ipopt.sh
index 1d7ffe3d..ce1f79b4 100644
--- a/trajectory_native/build_ipopt.sh
+++ b/trajectory_native/build_ipopt.sh
@@ -1,5 +1,5 @@
 #!/bin/sh
-apk add --update clang make gfortran blas-dev lapack-dev
+apk add --update clang make patch gfortran blas-dev lapack-dev
 
 CC=clang
 CXX=clang++
@@ -7,7 +7,7 @@ MUMPS_VERSION="3.0.5"
 IPOPT_VERSION="3.14.14"
 
 wget -c https://github.com/coin-or-tools/ThirdParty-Mumps/archive/refs/tags/releases/$MUMPS_VERSION.tar.gz -O - | tar -xz
-cd ThirdParty-Mumps-releases-3.0.5
+cd ThirdParty-Mumps-releases-$MUMPS_VERSION
 ./get.Mumps
 ./configure
 make -j$(nproc)