diff --git a/build/build_cvode.py b/build/build_cvode.py
index 4d975080..8449821f 100644
--- a/build/build_cvode.py
+++ b/build/build_cvode.py
@@ -19,8 +19,8 @@
 )
 args, _ = parser.parse_known_args()
 
-archive = download_file('https://github.com/LLNL/sundials/releases/download/v6.4.1/cvode-6.4.1.tar.gz',
-                        checksum='0a614e7d7d525d9ec88d5a30c887786d7c3681bd123bb6679fb9a4ec5f4609fe')
+archive = download_file('https://github.com/LLNL/sundials/releases/download/v7.1.1/cvode-7.1.1.tar.gz',
+                        checksum='36eb0ccea5e223ff4fbc528ef996bfb292ec8a1238019b929290ae5d444520ff')
 
 root = Path(__file__).parent
 
@@ -40,8 +40,8 @@
 
     cmake_args = [
         '-G', args.cmake_generator,
-        '-D', 'CMAKE_C_FLAGS_RELEASE=/MT /O2 /Ob2 /DNDEBUG',
-        '-D', 'CMAKE_C_FLAGS_DEBUG=/MT /Zi /Ob0 /Od /RTC1',
+        '-D', 'CMAKE_POLICY_DEFAULT_CMP0091=NEW',
+        '-D', 'CMAKE_MSVC_RUNTIME_LIBRARY=MultiThreaded'
     ]
 
     if fmi_architecture == 'x86':
@@ -66,11 +66,12 @@
     ['cmake'] +
     cmake_args +
     ['-B', build_dir,
-    '-D', f'BUILD_SHARED_LIBS=OFF',
-    '-D', f'BUILD_TESTING=OFF',
-    '-D', f'EXAMPLES_INSTALL=OFF',
+    '-D', 'BUILD_SHARED_LIBS=OFF',
+    '-D', 'BUILD_TESTING=OFF',
+    '-D', 'EXAMPLES_INSTALL=OFF',
+    '-D', 'SUNDIALS_ENABLE_ERROR_CHECKS=OFF',
     '-D', f'CMAKE_INSTALL_PREFIX={ install_prefix }',
-    root / 'cvode-6.4.1']
+    root / 'cvode-7.1.1']
 )
 
 check_call([
diff --git a/fmusim-gui/CMakeLists.txt b/fmusim-gui/CMakeLists.txt
index f875287d..b7fc8061 100644
--- a/fmusim-gui/CMakeLists.txt
+++ b/fmusim-gui/CMakeLists.txt
@@ -126,7 +126,8 @@ target_link_libraries(fmusim-gui PRIVATE
     Qt6::WebEngineWidgets
     ${LIBXML2_DIR}/lib/libxml2.lib
     ${ZLIB_DIR}/lib/zlib.lib
-    ${CVODE_DIR}/lib/sundials_cvode.lib
+    ${CVODE_DIR}/lib/sundials_cvode_static.lib
+    ${CVODE_DIR}/lib/sundials_core_static.lib
 )
 
 # Define target properties for Android with Qt 6 as:
diff --git a/fmusim-gui/build/build_cvode.py b/fmusim-gui/build/build_cvode.py
index 4b635019..d05b1aee 100644
--- a/fmusim-gui/build/build_cvode.py
+++ b/fmusim-gui/build/build_cvode.py
@@ -4,8 +4,8 @@
 import tarfile
 
 
-archive = download_file('https://github.com/LLNL/sundials/releases/download/v6.4.1/cvode-6.4.1.tar.gz',
-                        checksum='0a614e7d7d525d9ec88d5a30c887786d7c3681bd123bb6679fb9a4ec5f4609fe')
+archive = download_file('https://github.com/LLNL/sundials/releases/download/v7.1.1/cvode-7.1.1.tar.gz',
+                        checksum='36eb0ccea5e223ff4fbc528ef996bfb292ec8a1238019b929290ae5d444520ff')
 
 root = Path(__file__).parent
 
@@ -24,11 +24,12 @@
     ['cmake'] +
     cmake_args +
     ['-B', build_dir,
-    '-D', f'BUILD_SHARED_LIBS=OFF',
-    '-D', f'BUILD_TESTING=OFF',
-    '-D', f'EXAMPLES_INSTALL=OFF',
+    '-D', 'BUILD_SHARED_LIBS=OFF',
+    '-D', 'BUILD_TESTING=OFF',
+    '-D', 'EXAMPLES_INSTALL=OFF',
+    '-D', 'SUNDIALS_ENABLE_ERROR_CHECKS=OFF',
     '-D', f'CMAKE_INSTALL_PREFIX={ install_prefix }',
-    str(root / 'cvode-6.4.1')]
+    str(root / 'cvode-7.1.1')]
 )
 
 check_call([
diff --git a/fmusim/CMakeLists.txt b/fmusim/CMakeLists.txt
index e48f3631..327534cc 100644
--- a/fmusim/CMakeLists.txt
+++ b/fmusim/CMakeLists.txt
@@ -106,7 +106,8 @@ if (WIN32)
     set(libraries
       ${LIBXML2_DIR}/lib/libxml2s.lib
       ${ZLIB_DIR}/lib/zlibstatic.lib
-      ${CVODE_DIR}/lib/sundials_cvode.lib
+      ${CVODE_DIR}/lib/sundials_cvode_static.lib
+      ${CVODE_DIR}/lib/sundials_core_static.lib
       wsock32
       ws2_32
       bcrypt
@@ -116,6 +117,7 @@ elseif(UNIX AND NOT APPLE)
       ${LIBXML2_DIR}/lib/libxml2.a
       ${ZLIB_DIR}lib/libz.a
       ${CVODE_DIR}/lib/libsundials_cvode.a
+      ${CVODE_DIR}/lib/libsundials_core.a
       ${CMAKE_DL_LIBS}
       m
     )
@@ -124,6 +126,7 @@ else ()
       ${LIBXML2_DIR}/lib/libxml2.a
       ${ZLIB_DIR}lib/libz.a
       ${CVODE_DIR}/lib/libsundials_cvode.a
+      ${CVODE_DIR}/lib/libsundials_core.a
     )
 endif ()
 
diff --git a/fmusim/FMICVode.c b/fmusim/FMICVode.c
index b7e07fd7..ddc67842 100644
--- a/fmusim/FMICVode.c
+++ b/fmusim/FMICVode.c
@@ -20,7 +20,7 @@ struct FMISolverImpl {
 
     SUNContext sunctx;
     N_Vector x;
-    realtype reltol;
+    sunrealtype reltol;
     N_Vector abstol;
     SUNMatrix A;
     SUNLinearSolver LS;
@@ -40,7 +40,7 @@ struct FMISolverImpl {
 } SolverImpl_;
 
 // Right-hand-side function
-static int f(realtype t, N_Vector x, N_Vector ydot, void* user_data) {
+static int f(sunrealtype t, N_Vector x, N_Vector ydot, void* user_data) {
 
     FMISolver* solver = (FMISolver*)user_data;
 
@@ -60,7 +60,7 @@ static int f(realtype t, N_Vector x, N_Vector ydot, void* user_data) {
 }
 
 // Root function
-static int g(realtype t, N_Vector x, realtype* gout, void* user_data) {
+static int g(sunrealtype t, N_Vector x, sunrealtype* gout, void* user_data) {
 
     FMISolver* solver = (FMISolver*)user_data;
 
@@ -113,7 +113,7 @@ FMISolver* FMICVodeCreate(const FMISolverParameters* solverFunctions) {
     solver->getEventIndicators            = solverFunctions->getEventIndicators;
     solver->logError                      = solverFunctions->logError;
 
-    CALL_CVODE(SUNContext_Create(NULL, &solver->sunctx));
+    CALL_CVODE(SUNContext_Create(SUN_COMM_NULL, &solver->sunctx));
 
     solver->cvode_mem = CVodeCreate(CV_BDF, solver->sunctx);
     ASSERT_NOT_NULL(solver->cvode_mem);