diff --git a/src/3rdparty/SUNDIALS/CMakeLists.txt b/src/3rdparty/SUNDIALS/CMakeLists.txt
index 46d245508..fb678f1ed 100644
--- a/src/3rdparty/SUNDIALS/CMakeLists.txt
+++ b/src/3rdparty/SUNDIALS/CMakeLists.txt
@@ -13,9 +13,9 @@
 # limitations under the License.
 
 set(PACKAGE_NAME SUNDIALS)
-set(PACKAGE_VERSION v7.0.0)
+set(PACKAGE_VERSION v7.1.0)
 set(PACKAGE_REPOSITORY sundials)
-set(RELEASE_TAG v7.0.0)
+set(RELEASE_TAG v7.1.0)
 set(INSTALL_DIR ${PREBUILT_DIR}/${PACKAGE_NAME})
 
 # Either retrieve or build our package.
@@ -24,32 +24,32 @@ if(LIBOPENCOR_PREBUILT_SUNDIALS)
     if(EMSCRIPTEN)
         retrieve_package(${PACKAGE_NAME} ${PACKAGE_VERSION}
                          ${PACKAGE_REPOSITORY} ${RELEASE_TAG}
-                         78bce667f10758e3e5f2fcdc56a401514e323c0d)
+                         c9f7012b681622c4faa18d2b68f9dee2c236ea74)
     else()
         if(WIN32)
             if(RELEASE_MODE)
                 retrieve_package(${PACKAGE_NAME} ${PACKAGE_VERSION}
                                  ${PACKAGE_REPOSITORY} ${RELEASE_TAG}
-                                 4ae38fb1382236a092282c9cb5cd456db6ab746c)
+                                 519fd7c2133ed7efb666193028b50ac4f788f416)
             else()
                 retrieve_package(${PACKAGE_NAME} ${PACKAGE_VERSION}
                                  ${PACKAGE_REPOSITORY} ${RELEASE_TAG}
-                                 b2725d3140839774a5f253d59f39fda2cd33cfe0)
+                                 1bcd8ca9cea9b0d03f35b66058b53e1f06791d03)
             endif()
         elseif(APPLE)
             if(INTEL_MODE)
                 retrieve_package(${PACKAGE_NAME} ${PACKAGE_VERSION}
                                  ${PACKAGE_REPOSITORY} ${RELEASE_TAG}
-                                 c55dc7e76e72eb2389b7902b67ccbe3e3a344ef0)
+                                 c07da207a1da3da0dfb638c5bc2ba8908be7007f)
             else()
                 retrieve_package(${PACKAGE_NAME} ${PACKAGE_VERSION}
                                  ${PACKAGE_REPOSITORY} ${RELEASE_TAG}
-                                 35e6771a04f8943353b3ebef009d04fd3ed02bdf)
+                                 c54fd6934c2a72f99ba21dcb88e4d07f9b3e4d00)
             endif()
         else()
             retrieve_package(${PACKAGE_NAME} ${PACKAGE_VERSION}
                              ${PACKAGE_REPOSITORY} ${RELEASE_TAG}
-                             737f908f53c3a70224cea78ed5a5bf290207261c)
+                             3af6ee478c72261af012eb400fc1bd0e114c1727)
         endif()
     endif()
 else()
diff --git a/tests/api/sed/runtests.cpp b/tests/api/sed/runtests.cpp
index d2af9017c..aa4cc7ae5 100644
--- a/tests/api/sed/runtests.cpp
+++ b/tests/api/sed/runtests.cpp
@@ -119,17 +119,7 @@ namespace {
 void runOdeModel(bool pCompiled)
 {
     static const libOpenCOR::ExpectedIssues expectedIssues = {
-#if defined(BUILDING_ON_WINDOWS)
         {libOpenCOR::Issue::Type::ERROR, "At t = 0.00140014, mxstep steps taken before reaching tout."},
-#elif defined(BUILDING_ON_LINUX)
-        {libOpenCOR::Issue::Type::ERROR, "At t = 1, mxstep steps taken before reaching tout."},
-#else
-#    ifdef BUILDING_ON_INTEL
-        {libOpenCOR::Issue::Type::ERROR, "At t = 5.00577e+06, mxstep steps taken before reaching tout."},
-#    else
-        {libOpenCOR::Issue::Type::ERROR, "At t = 0.00140014, mxstep steps taken before reaching tout."},
-#    endif
-#endif
     };
 
     auto file = libOpenCOR::File::create(libOpenCOR::resourcePath(libOpenCOR::CELLML_2_FILE));
diff --git a/tests/api/version/tests.cpp b/tests/api/version/tests.cpp
index 952ee153c..7b3f3c25a 100644
--- a/tests/api/version/tests.cpp
+++ b/tests/api/version/tests.cpp
@@ -62,6 +62,6 @@ TEST(VersionTest, LLVM)
 
 TEST(VersionTest, SUNDIALS)
 {
-    EXPECT_EQ(0x070000U, libOpenCOR::sundialsVersion());
-    EXPECT_EQ("7.0.0", libOpenCOR::sundialsVersionString());
+    EXPECT_EQ(0x070100U, libOpenCOR::sundialsVersion());
+    EXPECT_EQ("7.1.0", libOpenCOR::sundialsVersionString());
 }
diff --git a/tests/bindings/javascript/version.test.js b/tests/bindings/javascript/version.test.js
index a5c31c278..03cf3918b 100644
--- a/tests/bindings/javascript/version.test.js
+++ b/tests/bindings/javascript/version.test.js
@@ -40,7 +40,7 @@ describe("Version tests", () => {
   });
 
   test("SUNDIALS", () => {
-    expect(libopencor.sundialsVersion()).toBe(0x070000);
-    expect(libopencor.sundialsVersionString()).toBe("7.0.0");
+    expect(libopencor.sundialsVersion()).toBe(0x070100);
+    expect(libopencor.sundialsVersionString()).toBe("7.1.0");
   });
 });
diff --git a/tests/bindings/python/test_sed_run.py b/tests/bindings/python/test_sed_run.py
index d61d77860..31f7d96e3 100644
--- a/tests/bindings/python/test_sed_run.py
+++ b/tests/bindings/python/test_sed_run.py
@@ -135,19 +135,7 @@ def run_ode_model(compiled):
     expected_issues = [
         [
             Issue.Type.Error,
-            (
-                "At t = 0.00140014, mxstep steps taken before reaching tout."
-                if platform.system() == "Windows"
-                else (
-                    "At t = 1, mxstep steps taken before reaching tout."
-                    if platform.system() == "Linux"
-                    else (
-                        "At t = 5.00577e+06, mxstep steps taken before reaching tout."
-                        if platform.machine() == "x86_64"
-                        else "At t = 0.00140014, mxstep steps taken before reaching tout."
-                    )
-                )
-            ),
+            "At t = 0.00140014, mxstep steps taken before reaching tout.",
         ],
     ]
 
diff --git a/tests/bindings/python/test_version.py b/tests/bindings/python/test_version.py
index a70c28de1..fc5d44c9c 100644
--- a/tests/bindings/python/test_version.py
+++ b/tests/bindings/python/test_version.py
@@ -88,9 +88,9 @@ def test_llvm_version_string():
 
 def test_sundials_version():
     assert isinstance(oc.sundials_version(), int)
-    assert oc.sundials_version() == 0x070000
+    assert oc.sundials_version() == 0x070100
 
 
 def test_sundials_version_string():
     assert isinstance(oc.sundials_version_string(), str)
-    assert oc.sundials_version_string() == "7.0.0"
+    assert oc.sundials_version_string() == "7.1.0"