diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index aeeb874..3a23847 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -13,9 +13,9 @@ jobs:
       fail-fast: false
       matrix:
         version:
-          - '1.0'
+          - 'min'
+          - 'lts'
           - '1'
-          - 'nightly'
         os:
           - ubuntu-latest
           - macOS-latest
diff --git a/Project.toml b/Project.toml
index 86ce0d0..efcaef3 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,6 +1,6 @@
 name = "AbstractFFTs"
 uuid = "621f4979-c628-5d54-868e-fcf4e3e8185c"
-version = "1.5.0"
+version = "1.6.0-dev"
 
 [deps]
 ChainRulesCore = "d360d2e6-b24c-11e9-a2a3-2a2ae2dbcce4"
@@ -20,11 +20,11 @@ Aqua = "0.8"
 ChainRulesCore = "1"
 ChainRulesTestUtils = "1"
 FiniteDifferences = "0.12"
-LinearAlgebra = "<0.0.1, 1"
-Random = "<0.0.1, 1"
-Test = "<0.0.1, 1"
+LinearAlgebra = "1"
+Random = "1"
+Test = "1"
 Unitful = "1"
-julia = "^1.0"
+julia = "1.10"
 
 [extras]
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
diff --git a/src/AbstractFFTs.jl b/src/AbstractFFTs.jl
index 3225916..b9571e9 100644
--- a/src/AbstractFFTs.jl
+++ b/src/AbstractFFTs.jl
@@ -8,9 +8,4 @@ export fft, ifft, bfft, fft!, ifft!, bfft!,
 include("definitions.jl")
 include("TestUtils.jl")
 
-if !isdefined(Base, :get_extension)
-    include("../ext/AbstractFFTsChainRulesCoreExt.jl")
-    include("../ext/AbstractFFTsTestExt.jl")
-end
-
 end # module
diff --git a/test/runtests.jl b/test/runtests.jl
index 0560174..22c55a3 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -202,7 +202,7 @@ end
                 # type inference checks of `rrule` fail on old Julia versions
                 # for higher-dimensional arrays:
                 # https://github.com/JuliaMath/AbstractFFTs.jl/pull/58#issuecomment-916530016
-                check_inferred = ndims(x) < 3 || VERSION >= v"1.6"
+                check_inferred = ndims(x) < 3
 
                 test_frule(AbstractFFTs.fftshift, x, dims)
                 test_rrule(AbstractFFTs.fftshift, x, dims; check_inferred=check_inferred)