diff --git a/NEWS.md b/NEWS.md
index d485c4e..1ff87f7 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,5 +1,9 @@
 # Release notes
 
+## Version 0.5.5 (2024-03-21)
+
+* Minor changes to the checks to be consistent with `EnergyModelsBase` v0.6.7.
+
 ## Version 0.5.4 (2024-03-04)
 
 ### Examples
diff --git a/Project.toml b/Project.toml
index b030add..bc37985 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "EnergyModelsRenewableProducers"
 uuid = "b007c34f-ba52-4995-ba37-fffe79fbde35"
 authors = ["Sigmund Eggen Holm <Sigmund.Holm@sintef.no>, Julian Straus <Julian.Straus@sintef.no>"]
-version = "0.5.4"
+version = "0.5.5"
 
 [deps]
 EnergyModelsBase = "5d7e687e-f956-46f3-9045-6f5a5fd49f50"
@@ -10,7 +10,7 @@ Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
 TimeStruct = "f9ed5ce0-9f41-4eaa-96da-f38ab8df101c"
 
 [compat]
-EnergyModelsBase = "^0.6.3"
+EnergyModelsBase = "^0.6.7"
 JuMP = "1.5"
 TimeStruct = "^0.7.0"
 julia = "^1.6"
diff --git a/src/checks.jl b/src/checks.jl
index eb1095a..0028cf3 100644
--- a/src/checks.jl
+++ b/src/checks.jl
@@ -1,17 +1,19 @@
 """
-    EMB.check_node(n::NonDisRES, 𝒯, modeltype::EMB.EnergyModel)
+    EMB.check_node(n::NonDisRES, 𝒯, modeltype::EMB.EnergyModel, check_timeprofiles::Bool)
 
 This method checks that the *[`NonDisRES`](@ref NonDisRES_public)* node is valid.
 
 ## Checks
  - The field `cap` is required to be non-negative (similar to the `Source` check).
- - The field `opex_fixed` is required to be non-negative (similar to the `Source` check).
- - The values of the dictionary `output` are required to be non-negative \
- (similar to the `Source` check).
- - The field `profile` is required to be in the range ``[0, 1]`` for all time steps \
- ``t ∈ \\mathcal{T}``.
+ - The value of the field `fixed_opex` is required to be non-negative and
+   accessible through a `StrategicPeriod` as outlined in the function
+   `check_fixed_opex(n, 𝒯ᴵⁿᵛ, check_timeprofiles)`.
+ - The values of the dictionary `output` are required to be non-negative
+   (similar to the `Source` check).
+ - The field `profile` is required to be in the range ``[0, 1]`` for all time steps
+   ``t ∈ \\mathcal{T}``.
 """
-function EMB.check_node(n::NonDisRES, 𝒯, modeltype::EMB.EnergyModel)
+function EMB.check_node(n::NonDisRES, 𝒯, modeltype::EMB.EnergyModel, check_timeprofiles::Bool)
 
     𝒯ᴵⁿᵛ = strategic_periods(𝒯)
 
@@ -19,10 +21,7 @@ function EMB.check_node(n::NonDisRES, 𝒯, modeltype::EMB.EnergyModel)
         sum(capacity(n, t) ≥ 0 for t ∈ 𝒯) == length(𝒯),
         "The capacity must be non-negative."
     )
-    @assert_or_log(
-        sum(opex_fixed(n, t_inv) ≥ 0 for t_inv ∈ 𝒯ᴵⁿᵛ) == length(𝒯ᴵⁿᵛ),
-        "The fixed OPEX must be non-negative."
-    )
+    EMB.check_fixed_opex(n, 𝒯ᴵⁿᵛ, check_timeprofiles)
     @assert_or_log(
         sum(outputs(n, p) ≥ 0 for p ∈ outputs(n)) == length(outputs(n)),
         "The values for the Dictionary `output` must be non-negative."
@@ -38,23 +37,25 @@ function EMB.check_node(n::NonDisRES, 𝒯, modeltype::EMB.EnergyModel)
 end
 
 """
-    EMB.check_node(n::HydroStorage, 𝒯, modeltype::EMB.EnergyModel)
+    EMB.check_node(n::HydroStorage, 𝒯, modeltype::EMB.EnergyModel, check_timeprofiles::Bool)
 
 This method checks that the *[`HydroStorage`](@ref HydroStorage_public)* node is valid.
 
 ## Checks
- - The value of the field `rate_cap` is required to be non-negative.\n
- - The value of the field `stor_cap` is required to be non-negative.\n
- - The value of the field `fixed_opex` is required to be non-negative.\n
- - The field `output` can only include a single `Resource`.\n
- - The value of the field `output` is required to be smaller or equal to 1.\n
- - The value of the field `input` is required to be in the range ``[0, 1]``.\n
- - The value of the field `level_init` is required to be in the range \
- ``[level\\_min, 1] \\cdot stor\\_cap(t)`` for all time steps ``t ∈ \\mathcal{T}``.\n
- - The value of the field `level_init` is required to be in the range ``[0, 1]``.\n
+ - The value of the field `rate_cap` is required to be non-negative.
+ - The value of the field `stor_cap` is required to be non-negative.
+ - The value of the field `fixed_opex` is required to be non-negative and
+   accessible through a `StrategicPeriod` as outlined in the function
+   `check_fixed_opex(n, 𝒯ᴵⁿᵛ, check_timeprofiles)`.
+ - The field `output` can only include a single `Resource`.
+ - The value of the field `output` is required to be smaller or equal to 1.
+ - The value of the field `input` is required to be in the range ``[0, 1]``.
+ - The value of the field `level_init` is required to be in the range
+   ``[level\\_min, 1] \\cdot stor\\_cap(t)`` for all time steps ``t ∈ \\mathcal{T}``.
+ - The value of the field `level_init` is required to be in the range ``[0, 1]``.
  - The value of the field `level_min` is required to be in the range ``[0, 1]``.
 """
-function EMB.check_node(n::HydroStorage, 𝒯, modeltype::EMB.EnergyModel)
+function EMB.check_node(n::HydroStorage, 𝒯, modeltype::EMB.EnergyModel, check_timeprofiles::Bool)
 
     𝒯ᴵⁿᵛ = strategic_periods(𝒯)
     cap = capacity(n)
@@ -67,10 +68,7 @@ function EMB.check_node(n::HydroStorage, 𝒯, modeltype::EMB.EnergyModel)
         sum(cap.level[t] < 0 for t ∈ 𝒯) == 0,
         "The storage capacity in field `stor_cap` has to be non-negative."
     )
-    @assert_or_log(
-        sum(opex_fixed(n, t_inv) >= 0 for t_inv ∈ 𝒯ᴵⁿᵛ) == length(𝒯ᴵⁿᵛ),
-        "The fixed OPEX must be non-negative."
-    )
+    EMB.check_fixed_opex(n, 𝒯ᴵⁿᵛ, check_timeprofiles)
     @assert_or_log(
         length(outputs(n)) == 1,
         "Only one resource can be stored, so only this one can flow out."
diff --git a/test/test_hydro.jl b/test/test_hydro.jl
index d616702..7b64bb7 100644
--- a/test/test_hydro.jl
+++ b/test/test_hydro.jl
@@ -440,7 +440,7 @@ end
     case[:T] = TwoLevel(2, 1, SimpleTimes(10, 1))
 
     # Run the model
-    m = EMB.run_model(case, modeltype, OPTIMIZER)
+    m = EMB.run_model(case, modeltype, OPTIMIZER; check_timeprofiles=false)
 
     # Extraction of the time structure
     𝒯 = case[:T]