diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1545270c7..139046b03 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -29,16 +29,18 @@ jobs:
 #            arch: x64
     steps:
       - uses: actions/checkout@v4
-      - uses: julia-actions/setup-julia@v1
+      - uses: julia-actions/setup-julia@v2
         with:
           version: ${{ matrix.version }}
           arch: ${{ matrix.arch }}
       - uses: julia-actions/cache@v1
       - uses: julia-actions/julia-buildpkg@v1
       - uses: julia-actions/julia-runtest@v1
-        with:
-          depwarn: error
+      # See https://github.com/JuliaCollections/DataStructures.jl/pull/951
+      #  with:
+      #    depwarn: error
       - uses: julia-actions/julia-processcoverage@v1
-      - uses: codecov/codecov-action@v3
+      - uses: codecov/codecov-action@v4
         with:
           file: lcov.info
+          token: ${{ secrets.CODECOV_TOKEN }}
diff --git a/Project.toml b/Project.toml
index 299a03b2c..236bf0e12 100644
--- a/Project.toml
+++ b/Project.toml
@@ -19,7 +19,7 @@ SparseArrays = "2f01184e-e22b-5df5-ae63-d93ebab69eaf"
 SymbolicWedderburn = "858aa9a9-4c7c-4c62-b466-2421203962a2"
 
 [compat]
-DataStructures = "0.18"
+DataStructures = "0.18, 0.19"
 JuMP = "1.10"
 MathOptInterface = "1.13"
 MultivariateBases = "0.2"
@@ -29,5 +29,5 @@ MutableArithmetics = "1"
 PolyJuMP = "0.7"
 Reexport = "0.2, 1.0"
 SemialgebraicSets = "0.3"
-SymbolicWedderburn = "0.3"
+SymbolicWedderburn = "0.3, 0.4"
 julia = "1.6"
diff --git a/docs/src/tutorials/Symmetry/cyclic.jl b/docs/src/tutorials/Symmetry/cyclic.jl
index f7088f4b0..edb9cef8c 100644
--- a/docs/src/tutorials/Symmetry/cyclic.jl
+++ b/docs/src/tutorials/Symmetry/cyclic.jl
@@ -158,10 +158,10 @@ gram = gram_matrix(con_ref).blocks #src
 @test gram[1].basis.polynomials[2] ≈ -sum(x)/√3 #src
 @test gram[2].Q ≈ [0.5;;] rtol = 1e-6 #src
 @test length(gram[2].basis.polynomials) == 1 #src
-@test gram[2].basis.polynomials[1] ≈ (basis[1] - basis[2] * im) / √2  #src
+@test gram[2].basis.polynomials[1] ≈ (basis[1] + basis[2] * im) / √2  #src
 @test gram[3].Q ≈ [0.5;;] rtol = 1e-6 #src
 @test length(gram[3].basis.polynomials) == 1 #src
-@test gram[3].basis.polynomials[1] ≈ (basis[1] + basis[2] * im) / √2 #src
+@test gram[3].basis.polynomials[1] ≈ (basis[1] - basis[2] * im) / √2 #src
 for gram in gram_matrix(con_ref).blocks
     println(gram.basis.polynomials)
     display(gram.Q)
diff --git a/docs/src/tutorials/Symmetry/dihedral.jl b/docs/src/tutorials/Symmetry/dihedral.jl
index 7802a8b65..920859c18 100644
--- a/docs/src/tutorials/Symmetry/dihedral.jl
+++ b/docs/src/tutorials/Symmetry/dihedral.jl
@@ -149,9 +149,9 @@ function solve(G)
 
     g = gram_matrix(con_ref).blocks #src
     @test length(g) == 5                       #src
-    @test g[1].basis.polynomials == [y^3, x^2*y, y] #src
-    @test g[2].basis.polynomials == [-x^3, -x*y^2, -x] #src
-    for i in 1:2                        #src
+    @test g[4].basis.polynomials == [y^3, x^2*y, y] #src
+    @test g[5].basis.polynomials == [-x^3, -x*y^2, -x] #src
+    for i in [4, 5]                     #src
         I = 3:-1:1                      #src
         Q = g[i].Q[I, I]                #src
         @test size(Q) == (3, 3)         #src
@@ -162,20 +162,20 @@ function solve(G)
         @test Q[1, 3] ≈ -5/8  rtol=1e-2 #src
         @test Q[3, 3] ≈  1    rtol=1e-2 #src
     end #src
-    @test length(g[3].basis.polynomials) == 2 #src
-    @test g[3].basis.polynomials[1] == 1.0 #src
-    @test g[3].basis.polynomials[2] ≈ -(√2/2)x^2 - (√2/2)y^2 #src
-    @test size(g[3].Q) == (2, 2)             #src
-    @test g[3].Q[1, 1] ≈ 7921/4096 rtol=1e-2 #src
-    @test g[3].Q[1, 2] ≈ 0.983 rtol=1e-2  #src
-    @test g[3].Q[2, 2] ≈ 1/2 rtol=1e-2 #src
-    @test g[4].basis.polynomials == [x * y] #src
-    @test size(g[4].Q) == (1, 1)       #src
-    @test g[4].Q[1, 1] ≈ 0   atol=1e-2 #src
-    @test length(g[5].basis.polynomials) == 1 #src
-    @test g[5].basis.polynomials[1] ≈ (√2/2)x^2 - (√2/2)y^2 #src
-    @test size(g[5].Q) == (1, 1)       #src
-    @test g[5].Q[1, 1] ≈ 0   atol=1e-2 #src
+    @test length(g[1].basis.polynomials) == 2 #src
+    @test g[1].basis.polynomials[1] == 1.0 #src
+    @test g[1].basis.polynomials[2] ≈ -(√2/2)x^2 - (√2/2)y^2 #src
+    @test size(g[1].Q) == (2, 2)             #src
+    @test g[1].Q[1, 1] ≈ 7921/4096 rtol=1e-2 #src
+    @test g[1].Q[1, 2] ≈ 0.983 rtol=1e-2  #src
+    @test g[1].Q[2, 2] ≈ 1/2 rtol=1e-2 #src
+    @test g[2].basis.polynomials == [x * y] #src
+    @test size(g[2].Q) == (1, 1)       #src
+    @test g[2].Q[1, 1] ≈ 0   atol=1e-2 #src
+    @test length(g[3].basis.polynomials) == 1 #src
+    @test g[3].basis.polynomials[1] ≈ (√2/2)x^2 - (√2/2)y^2 #src
+    @test size(g[3].Q) == (1, 1)       #src
+    @test g[3].Q[1, 1] ≈ 0   atol=1e-2 #src
     for g in gram_matrix(con_ref).blocks
         println(g.basis.polynomials)
     end
diff --git a/src/Certificate/Symmetry/wedderburn.jl b/src/Certificate/Symmetry/wedderburn.jl
index 71adffce5..698ed0c16 100644
--- a/src/Certificate/Symmetry/wedderburn.jl
+++ b/src/Certificate/Symmetry/wedderburn.jl
@@ -11,11 +11,12 @@ function SymbolicWedderburn.decompose(
 end
 
 function SymbolicWedderburn.ExtensionHomomorphism(
+    ::Type{I},
     action::SymbolicWedderburn.Action,
     basis::MB.MonomialBasis,
-)
+) where {I<:Integer}
     monos = collect(basis.monomials)
-    return SymbolicWedderburn.ExtensionHomomorphism(Int, action, monos)
+    return SymbolicWedderburn.ExtensionHomomorphism(I, action, monos)
 end
 
 struct VariablePermutation <: SymbolicWedderburn.ByPermutations end
diff --git a/test/Project.toml b/test/Project.toml
index 492f4adbb..97ea56b78 100644
--- a/test/Project.toml
+++ b/test/Project.toml
@@ -13,4 +13,4 @@ SumOfSquares = "4b9e565b-77fc-50a5-a571-1244f986bda1"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [compat]
-DynamicPolynomials = "0.5"
+DynamicPolynomials = "0.5, 0.6"