diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4d07b984..46730443 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -22,7 +22,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        julia-version: ['1.6', '1', 'nightly']
+        julia-version: ['1.9', '1', 'nightly']
         julia-arch: [x64]
         os: [ubuntu-latest, macOS-latest, windows-latest]
         # # 32-bit Julia binaries are not available on macOS
diff --git a/Project.toml b/Project.toml
index 31ef6592..7df7eec9 100644
--- a/Project.toml
+++ b/Project.toml
@@ -23,7 +23,7 @@ Markdown = "<0.0.1, 1"
 Requires = "0.5.2, 1"
 SparseArrays = "<0.0.1, 1"
 Test = "<0.0.1, 1"
-julia = "1"
+julia = "1.9"
 
 [extras]
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
diff --git a/src/TaylorSeries.jl b/src/TaylorSeries.jl
index dca66013..aba0d3ad 100644
--- a/src/TaylorSeries.jl
+++ b/src/TaylorSeries.jl
@@ -26,11 +26,7 @@ end
 
 using LinearAlgebra: norm, mul!,
     lu, lu!, LinearAlgebra.lutype, LinearAlgebra.copy_oftype,
-    LinearAlgebra.issuccess
-
-if VERSION >= v"1.7.0-DEV.1188"
-    using LinearAlgebra: NoPivot, RowMaximum
-end
+    LinearAlgebra.issuccess, NoPivot, RowMaximum
 
 import LinearAlgebra: norm, mul!, lu
 
diff --git a/src/arithmetic.jl b/src/arithmetic.jl
index bb22a986..38d06aef 100644
--- a/src/arithmetic.jl
+++ b/src/arithmetic.jl
@@ -966,8 +966,8 @@ end
 # end
 
 # see https://github.com/JuliaLang/julia/pull/40623
-const LU_RowMaximum = VERSION >= v"1.7.0-DEV.1188" ? RowMaximum() : Val(true)
-const LU_NoPivot = VERSION >= v"1.7.0-DEV.1188" ? NoPivot() : Val(false)
+const LU_RowMaximum = RowMaximum()
+const LU_NoPivot = NoPivot()
 
 # Adapted from (Julia v1.2) stdlib/v1.2/LinearAlgebra/src/lu.jl#240-253
 # and (Julia v1.4.0-dev) stdlib/LinearAlgebra/v1.4/src/lu.jl#270-274,