diff --git a/.github/workflows/blank.yml b/.github/workflows/blank.yml
index 00217c7..9189db7 100644
--- a/.github/workflows/blank.yml
+++ b/.github/workflows/blank.yml
@@ -28,7 +28,7 @@ jobs:
     steps:
       # Checkout UniMath in the current directory.
       - name: Checkout UniMath
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           repository: UniMath/UniMath
           path: .
@@ -36,13 +36,13 @@ jobs:
 
       # Checkout TypeTheory in TypeTheory/
       - name: Checkout largecatmodules
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           path: largecatmodules
 
       # Grab the cache if available. We tell dune to use $(pwd)/dune-cache/ in
       # the custom_script below.
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: dune-cache
           key: largecatmodules-coq-${{ matrix.coq-version }}-${{ github.run_id }}-${{ github.run_number }}
diff --git a/Modules/Signatures/HssInitialModel.v b/Modules/Signatures/HssInitialModel.v
index 67da565..b13800d 100644
--- a/Modules/Signatures/HssInitialModel.v
+++ b/Modules/Signatures/HssInitialModel.v
@@ -31,6 +31,7 @@ Require Import UniMath.CategoryTheory.Chains.Chains.
 Require Import UniMath.CategoryTheory.Chains.Adamek.
 Require Import UniMath.CategoryTheory.Chains.OmegaCocontFunctors.
 Require Import UniMath.CategoryTheory.FunctorAlgebras.
+Require UniMath.SubstitutionSystems.SubstitutionSystems.
 Require Import UniMath.SubstitutionSystems.LiftingInitial_alt.
 Require Import UniMath.SubstitutionSystems.ModulesFromSignatures.
 Require Import UniMath.SubstitutionSystems.SignatureCategory.
@@ -85,7 +86,7 @@ Section EpiSignatureSig.
     := hss_initial_arrow_mon hsig b,, hss_initial_arrow_law hsig b.
 
   Local Notation EndAlg sig :=
-    (FunctorAlg (Id_H HSET BinCoproductsHSET ( sig))).
+    (FunctorAlg (SubstitutionSystems.Id_H HSET BinCoproductsHSET ( sig))).
 
   Local Notation M_alg := (ModulesFromSignatures.M_alg HSET BinCoproductsHSET).
 
@@ -94,7 +95,7 @@ Section EpiSignatureSig.
         (hsig : is_omega_cocont sig)
              (b : model (sigWithStrength_to_sig sig))
              (t : (rep_disp SET) [{(sigWithStrength_to_sig sig)}] ⟦ hss_initial_model hsig, b ⟧) :
-    is_algebra_mor (Id_H HSET  BinCoproductsHSET ( sig))
+    is_algebra_mor (SubstitutionSystems.Id_H HSET  BinCoproductsHSET ( sig))
                    (pr1 (pr1 (iniHSS sig hsig)))
                    (M_alg sig b (model_τ b))
                    (pr1 (pr1 t)).
@@ -150,7 +151,7 @@ Section EpiSignatureSig.
         (Colimits.ColimsFunctorCategory_of_shape nat_graph
            HSET HSET (ColimsHSET_of_shape nat_graph)
            (initChain (Initial_functor_precat HSET HSET InitialHSET)
-              (Id_H HSET BinCoproductsHSET ( sig)))))
+              (SubstitutionSystems.Id_H HSET BinCoproductsHSET ( sig)))))
      (ModulesFromSignatures.M_alg HSET BinCoproductsHSET ( sig) b (model_τ b)))).
 
     specialize (h (rep_mor_to_alg_mor hsig b t)).
diff --git a/dune-project b/dune-project
index 02769f3..1c48051 100644
--- a/dune-project
+++ b/dune-project
@@ -1,3 +1,3 @@
-(lang dune 3.5)
-(using coq 0.6)
+(lang dune 3.8)
+(using coq 0.8)