diff --git a/Project.toml b/Project.toml
index 1e5ac2f..e127b5d 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,6 +1,6 @@
 name = "ReferenceFiniteElements"
 uuid = "6dc62d09-f8eb-43fd-9672-074e490a997f"
-version = "0.14.2"
+version = "0.14.3"
 authors = ["Craig M. Hamel <cmhamel32@gmail.com> and contributors"]
 
 [deps]
diff --git a/src/ReferenceFiniteElements.jl b/src/ReferenceFiniteElements.jl
index dfe407f..5dbf4d9 100644
--- a/src/ReferenceFiniteElements.jl
+++ b/src/ReferenceFiniteElements.jl
@@ -8,25 +8,6 @@ using Polynomials
 using SpecialPolynomials
 using StaticArrays
 
-function Polynomials.derivative(p::P) where {
-    B <: SpecialPolynomials.ShiftedLegendreBasis,
-    T, X,
-    P <: SpecialPolynomials.AbstractUnivariatePolynomial{B,T,X}
-}
-    hasnan(p) && return Polynomials.⟒(P){T,X}(T[NaN])
-
-    d = degree(p)
-    qs = zeros(T, d)
-
-    for i in 0:(d - 1)
-        gamma = 2 * (2i + 1)   # ← extra factor of 2 from chain rule
-        qs[i + 1] = gamma * sum(p[j] for j in (i + 1):2:d)
-    end
-
-    dp = Polynomials.MutableDensePolynomial{B, Float64, :x}(qs)
-    return dp
-end
-
 # includes
 include("AbstractTypes.jl")
 include("ReferenceFE.jl")