diff --git a/CHANGELOG.md b/CHANGELOG.md
index f45e07e..ba1c0c7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -25,6 +25,12 @@ compat bound.
 An unused binding goes out of `test/tensorproduct.jl`, as fatou 0.22.0 reports it; no source file
 changes.
 
+### Bug Fixes
+
+The floors rise to Julia 1.11, GeometricBase 0.15.0, CompactBasisFunctions 0.4.2 and
+QuadratureRules 0.2.2, because GeometricBase 0.15 declares its stubs public and requires Julia
+1.11.
+
 ## [0.3.0] — 2026-09-20
 
 ### New Features
diff --git a/Project.toml b/Project.toml
index d67027a..41ebf81 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,6 +1,6 @@
 name = "SimpleSplines"
 uuid = "ac480f6c-9a94-4d53-a283-9db69f109154"
-version = "0.3.0"
+version = "0.3.1"
 authors = ["Michael Kraus"]
 
 [deps]
@@ -17,13 +17,13 @@ SparseArrays = "2f01184e-e22b-5df5-ae63-d93ebab69eaf"
 
 [compat]
 BandedMatrices = "1"
-CompactBasisFunctions = "0.3, 0.4"
+CompactBasisFunctions = "0.4.2"
 ContinuumArrays = "0.18, 0.19, 0.20, 0.21"
 DomainSets = "0.8"
 FFTW = "1"
-GeometricBase = "0.14.8"
+GeometricBase = "0.15.0"
 LinearAlgebra = "1"
-QuadratureRules = "0.2"
+QuadratureRules = "0.2.2"
 Random = "1"
 SparseArrays = "1"
-julia = "1.10"
+julia = "1.11"
diff --git a/test/mass.jl b/test/mass.jl
index 726a220..c9033a3 100644
--- a/test/mass.jl
+++ b/test/mass.jl
@@ -249,8 +249,6 @@ Random.seed!(0x2f7a91c4)
 
         # the keyword is a literal at the call site, so it must constant-propagate into a
         # concrete type -- a two-way Union here propagates into every consumer downstream.
-        # Written as a function rather than a closure: a closure over a local infers as Any
-        # on the 1.10 compat floor.
         project(M, b) = mass_operator(M, b; kernel = :project)
         @test @inferred(project(Su, bu)) isa CirculantMass
         @test @inferred(project(Sg, bg)) isa FactorizedMass