diff --git a/ortools/flatzinc/challenge/Makefile b/ortools/flatzinc/challenge/Makefile
index 3dae17137d..de38f0d3e6 100644
--- a/ortools/flatzinc/challenge/Makefile
+++ b/ortools/flatzinc/challenge/Makefile
@@ -18,7 +18,7 @@ DOCKER_BUILD_CMD := docker build
 endif
 DOCKER_RUN_CMD := docker run --rm --init
 
-MZN_SUFFIX=2024v5
+MZN_SUFFIX=2025v1
 DOCKER_NAME=cp-sat-minizinc-challenge
 MZN_TAG=${DOCKER_NAME}:${MZN_SUFFIX}
 MZN_LS_TAG=${DOCKER_NAME}-ls:${MZN_SUFFIX}
diff --git a/ortools/flatzinc/challenge/minizinc-challenge-ls.Dockerfile b/ortools/flatzinc/challenge/minizinc-challenge-ls.Dockerfile
index 81db76a0ed..86b9c8034c 100644
--- a/ortools/flatzinc/challenge/minizinc-challenge-ls.Dockerfile
+++ b/ortools/flatzinc/challenge/minizinc-challenge-ls.Dockerfile
@@ -1,4 +1,4 @@
-FROM minizinc/mznc2024:latest AS env
+FROM minizinc/mznc2025:latest AS env
 
 ENV SRC_GIT_BRANCH v99bugfix
 
@@ -29,4 +29,6 @@ RUN ln -s /root/or-tools/bazel-bin/ortools/flatzinc/fz /entry_data/fzn-exec
 RUN cp /root/or-tools/ortools/flatzinc/mznlib/*mzn /entry_data/mzn-lib
 
 # Patch the run scripts
-RUN  sed -i -e "s/-G/--fzn-flags --params=use_ls_only:true -G/g" /minizinc/mzn-exec-*
\ No newline at end of file
+RUN  sed -i -e "s/-G/--fzn-flags --params=use_ls_only:true -p 1 -G/g" /minizinc/mzn-exec-fd
+RUN  sed -i -e "s/-G/--fzn-flags --params=use_ls_only:true,num_workers:3 -G/g" /minizinc/mzn-exec-free
+RUN  sed -i -e "s/-G/--fzn-flags --params=use_ls_only:true -G/g" /minizinc/mzn-exec-par
\ No newline at end of file
diff --git a/ortools/flatzinc/challenge/minizinc-challenge.Dockerfile b/ortools/flatzinc/challenge/minizinc-challenge.Dockerfile
index d111f1e5f8..1113ff8778 100644
--- a/ortools/flatzinc/challenge/minizinc-challenge.Dockerfile
+++ b/ortools/flatzinc/challenge/minizinc-challenge.Dockerfile
@@ -1,4 +1,4 @@
-FROM minizinc/mznc2024:latest AS env
+FROM minizinc/mznc2025:latest AS env
 
 ENV SRC_GIT_BRANCH v99bugfix