diff --git a/Project.toml b/Project.toml
index 07569e16..f99b24c6 100644
--- a/Project.toml
+++ b/Project.toml
@@ -23,7 +23,7 @@ AliasTables = "1"
 DataAPI = "1"
 DataStructures = "0.10, 0.11, 0.12, 0.13, 0.14, 0.17, 0.18, 0.19"
 IrrationalConstants = "0.2.6"
-JET = "0.9.18, 0.10"
+JET = "0.9.18, 0.10, 0.11"
 LinearAlgebra = "<0.0.1, 1"
 LogExpFunctions = "0.3, 1"
 Missings = "0.3, 0.4, 1.0"
diff --git a/src/pairwise.jl b/src/pairwise.jl
index c8023c6a..876dd4c1 100644
--- a/src/pairwise.jl
+++ b/src/pairwise.jl
@@ -40,7 +40,7 @@ function check_vectors(x, y, skipmissing::Symbol)
         end
     end
     if m > 1 && n > 1
-        indsx == indsy ||
+        keys(first(x)) == keys(first(y)) ||
             throw(ArgumentError("All input vectors must have the same indices"))
     end
 end
diff --git a/src/scalarstats.jl b/src/scalarstats.jl
index bff0cec2..21e8b322 100644
--- a/src/scalarstats.jl
+++ b/src/scalarstats.jl
@@ -524,7 +524,11 @@ function sem(x::AbstractArray, weights::ProbabilityWeights; mean=nothing)
 end
 
 # Median absolute deviation
-IrrationalConstants.@irrational mad_constant 1.4826022185056018 BigFloat("1.482602218505601860547076529360423431326703202590312896536266275245674447622701")
+# `@static`-guard so the definition is idempotent: JET re-expands top-level code via
+# Revise, and IrrationalConstants >= 0.2.6 throws if the type is already defined.
+@static if !isdefined(@__MODULE__, :Mad_constant)
+    IrrationalConstants.@irrational mad_constant 1.4826022185056018 BigFloat("1.482602218505601860547076529360423431326703202590312896536266275245674447622701")
+end
 
 """
     mad(x; center=median(x), normalize=true)
diff --git a/test/jet.jl b/test/jet.jl
index 78d06ebc..6a8f0156 100644
--- a/test/jet.jl
+++ b/test/jet.jl
@@ -1,22 +1,23 @@
 using StatsBase, Test
 import JET
 
-# JET has only experimental support for Julia 1.12 currently
-# It throws an internal `AssertionError` in the tests below
-if VERSION < v"1.12-"
-    @testset "JET" begin
-        # Check that there are no undefined global references and undefined field accesses
-        JET.test_package("StatsBase"; target_defined_modules = true, mode = :typo)
+@testset "JET" begin
+    # Check that there are no undefined global references and undefined field accesses
+    JET.test_package(StatsBase; target_modules = (StatsBase,), mode = :typo)
 
-        # Default error analysis for common problem fails since JET errors on interface definitions
-        # The (deprecated) `model_response(::StatisticalModel)` calls the interface
-        # function `response(::StatisticalModel)` for which no method exists yet
-        # Note: This analysis is not enough strict to guarantee that there are no runtime errors!
-        # Ref https://github.com/aviatesk/JET.jl/issues/495
-        res = JET.report_package("StatsBase"; target_defined_modules = true, mode = :basic, toplevel_logger = nothing)
-        println(res)
-        reports = JET.get_reports(res)
-        @test_broken isempty(reports)
-        @test length(reports) <= 1
+    # Default error analysis
+    # Note: This analysis is not enough strict to guarantee that there are no runtime errors!
+    kwargs = if isdefined(JET, :LastFrameModuleExact) # JET@0.11
+        (; target_modules = (StatsBase,))
+    else
+        (; target_defined_modules = true)
     end
+    # The (deprecated) `model_response(::StatisticalModel)` calls the interface
+    # function `response(::StatisticalModel)` for which no method exists yet
+    # Ref https://github.com/aviatesk/JET.jl/issues/495
+    res = JET.report_package(StatsBase; kwargs..., mode = :basic, toplevel_logger = nothing)
+    println(res)
+    reports = JET.get_reports(res)
+    @test_broken isempty(reports)
+    @test length(reports) <= 1
 end