diff --git a/Project.toml b/Project.toml
index e7642d08..f50ed4a7 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "TemporalGPs"
 uuid = "e155a3c4-0841-43e1-8b83-a0e4f03cc18f"
 authors = ["willtebbutt <wt0881@my.bristol.ac.uk> and contributors"]
-version = "0.6.6"
+version = "0.6.7"
 
 [deps]
 AbstractGPs = "99985d1d-32ba-4be9-9821-2ec096f28918"
@@ -18,12 +18,12 @@ Zygote = "e88e6eb3-aa80-5325-afca-941959d7151f"
 
 [compat]
 AbstractGPs = "0.5.17"
-Bessels = "0.2.8"
-BlockDiagonals = "0.1.7"
-ChainRulesCore = "1"
-FillArrays = "0.13.0 - 0.13.7, 1"
+Bessels = "0.2.8 - 0.2.8"
+BlockDiagonals = "0.1.7 - 0.1.41"
+ChainRulesCore = "1.0.0 - 1.16.0"
+FillArrays = "0.13.0 - 0.13.7"
 KernelFunctions = "0.9, 0.10.1"
-StaticArrays = "1"
-StructArrays = "0.5, 0.6"
-Zygote = "0.6.65"
+StaticArrays = "1.0.0 - 1.6.5"
+StructArrays = "0.5, 0.6.0 - 0.6.16"
+Zygote = "0.6.65 - 0.6.65"
 julia = "1.6"
diff --git a/test/gp/lti_sde.jl b/test/gp/lti_sde.jl
index 203b16ee..a4f20578 100644
--- a/test/gp/lti_sde.jl
+++ b/test/gp/lti_sde.jl
@@ -3,8 +3,7 @@ using KernelFunctions: kappa
 using ChainRulesTestUtils
 using TemporalGPs: build_lgssm, StorageType, is_of_storage_type, lgssm_components
 using Test
-include("../test_util.jl")
-include("../models/model_test_utils.jl")
+
 _logistic(x) = 1 / (1 + exp(-x))
 
 # Everything is tested once the LGSSM is constructed, so it is sufficient just to ensure
@@ -226,7 +225,7 @@ println("lti_sde:")
 
             # Just need to ensure we can differentiate through construction properly.
             if isnothing(kernel.to_vec_grad)
-                @test_broken "Gradient tests are not passing"
+                @test_broken false # "Gradient tests are not passing"
                 continue
             elseif kernel.to_vec_grad
                 test_zygote_grad_finite_differences_compatible(
diff --git a/test/models/lgssm.jl b/test/models/lgssm.jl
index be257f65..19662b66 100644
--- a/test/models/lgssm.jl
+++ b/test/models/lgssm.jl
@@ -25,9 +25,6 @@ using LinearAlgebra
 using StructArrays
 using Zygote, StaticArrays
 
-include("model_test_utils.jl")
-include("../test_util.jl")
-
 println("lgssm:")
 @testset "lgssm" begin
 
diff --git a/test/models/linear_gaussian_conditionals.jl b/test/models/linear_gaussian_conditionals.jl
index d3219a85..9e0e7ba7 100644
--- a/test/models/linear_gaussian_conditionals.jl
+++ b/test/models/linear_gaussian_conditionals.jl
@@ -1,9 +1,6 @@
 using TemporalGPs: posterior_and_lml, predict, predict_marginals
 using Test
 
-include("../test_util.jl")
-include("../models/model_test_utils.jl")
-
 println("linear_gaussian_conditionals:")
 @testset "linear_gaussian_conditionals" begin
     Dlats = [1, 3]
diff --git a/test/models/missings.jl b/test/models/missings.jl
index 407d030c..3b4084e0 100644
--- a/test/models/missings.jl
+++ b/test/models/missings.jl
@@ -7,9 +7,6 @@ using Random: randperm
 using ChainRulesTestUtils
 using Zygote: Context
 
-include("../test_util.jl")
-include("../models/model_test_utils.jl")
-
 @info "missings:"
 @testset "missings" begin
 
diff --git a/test/space_time/pseudo_point.jl b/test/space_time/pseudo_point.jl
index 8e43fa04..e90f0374 100644
--- a/test/space_time/pseudo_point.jl
+++ b/test/space_time/pseudo_point.jl
@@ -16,8 +16,6 @@ using TemporalGPs:
     Separable,
     approx_posterior_marginals
 using Test
-include("../test_util.jl")
-include("../models/model_test_utils.jl")
 
 @testset "pseudo_point" begin
 
diff --git a/test/util/chainrules.jl b/test/util/chainrules.jl
index 0d716119..b68ab30c 100644
--- a/test/util/chainrules.jl
+++ b/test/util/chainrules.jl
@@ -9,7 +9,6 @@ using TemporalGPs: time_exp, _map, Gaussian
 using FillArrays
 using StructArrays
 using Zygote: ZygoteRuleConfig
-include("../test_util.jl")
 
 @testset "chainrules" begin
     @testset "StaticArrays" begin