diff --git a/.github/workflows/Test.yml b/.github/workflows/Test.yml
index b6328c8d6d..64ec46ea9c 100644
--- a/.github/workflows/Test.yml
+++ b/.github/workflows/Test.yml
@@ -30,6 +30,7 @@ jobs:
           - "pre"
         group:
           - Core
+          - IO
           - Spatial
           - Extensions
     uses: "SciML/.github/.github/workflows/tests.yml@v1"
diff --git a/Project.toml b/Project.toml
index e87278e3d7..4f8d245690 100644
--- a/Project.toml
+++ b/Project.toml
@@ -62,7 +62,7 @@ Parameters = "0.12"
 Reexport = "0.2, 1.0"
 Requires = "1.0"
 RuntimeGeneratedFunctions = "0.5.12"
-SciMLBase = "2.46"
+SciMLBase = "< 2.57.2"
 Setfield = "1"
 # StructuralIdentifiability = "0.5.8"
 SymbolicUtils = "2.1.2, 3.3.0"
diff --git a/test/compositional_modelling/component_based_model_creation.jl b/test/compositional_modelling/component_based_model_creation.jl
index 94852cd4cc..0da1da2665 100644
--- a/test/compositional_modelling/component_based_model_creation.jl
+++ b/test/compositional_modelling/component_based_model_creation.jl
@@ -267,7 +267,8 @@ end
 # Adding algebraic constraints.
 let
     @parameters t, r₊, r₋, β
-    @species A(t), B(t), C(t), D(t)
+    @species A(t), B(t), C(t)
+    @variables D(t)
     rxs1 = [Reaction(r₊, [A, B], [C])]
     rxs2 = [Reaction(r₋, [C], [A, B])]
     @named rs1 = ReactionSystem(rxs1, t, [A, B, C], [r₊])
diff --git a/test/runtests.jl b/test/runtests.jl
index ab3afab8c9..de67af08be 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -38,7 +38,6 @@ end
         @time @safetestset "Units" begin include("miscellaneous_tests/units.jl") end
         @time @safetestset "Compound Species" begin include("miscellaneous_tests/compound_macro.jl") end
         @time @safetestset "Reaction Balancing" begin include("miscellaneous_tests/reaction_balancing.jl") end
-        @time @safetestset "ReactionSystem Serialisation" begin include("miscellaneous_tests/reactionsystem_serialisation.jl") end
 
         # Tests reaction network analysis features.
         @time @safetestset "Conservation Laws" begin include("network_analysis/conservation_laws.jl") end
@@ -54,9 +53,13 @@ end
         # Tests upstream SciML and DiffEq stuff.
         @time @safetestset "MTK Structure Indexing" begin include("upstream/mtk_structure_indexing.jl") end
         @time @safetestset "MTK Problem Inputs" begin include("upstream/mtk_problem_inputs.jl") end
+    end
 
-        # Tests network visualisation.
+    if GROUP == "All" || GROUP == "IO"
+        # @time @safetestset "ReactionSystem Serialisation" begin include("miscellaneous_tests/reactionsystem_serialisation.jl") end
         # @time @safetestset "Latexify" begin include("visualisation/latexify.jl") end
+
+        # Tests network visualisation.
         # Disable on Macs as can't install GraphViz via jll
         if !Sys.isapple()
             @time @safetestset "Graphs Visualisations" begin include("visualisation/graphs.jl") end