diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index c533927..c5f1433 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -81,7 +81,6 @@ jobs:
         os:
           - ubuntu-latest
         version:
-          - '1.6'
           - '1'
     steps:
       - uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9
diff --git a/Project.toml b/Project.toml
index e4f5472..5008c10 100644
--- a/Project.toml
+++ b/Project.toml
@@ -40,14 +40,14 @@ ManualMemory = "0.1.8"
 Polyester = "0.4, 0.5, 0.6, 0.7"
 SIMDTypes = "0.1"
 SLEEFPirates = "0.6"
-Static = "0.8.4, 1"
+Static = "1"
 StaticArrayInterface = "1"
 StaticArrays = "1"
-StrideArraysCore = "0.4.7, 0.5"
+StrideArraysCore = "0.5"
 UnPack = "1"
 VectorizationBase = "0.21.40"
 VectorizedRNG = "0.2.13"
-julia = "1.6"
+julia = "1.10"
 
 [extras]
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
diff --git a/src/chain_rules.jl b/src/chain_rules.jl
index 2a124db..72f1b20 100644
--- a/src/chain_rules.jl
+++ b/src/chain_rules.jl
@@ -162,9 +162,9 @@ function valgrad_noloss(
     @inbounds @simd ivdep for i in eachindex(parg)
       parg2[i] = parg[i]
     end
-    pm += aoff
+    pm = __add(pm, aoff)
     g = PtrArray(Ptr{T}(pm), (glen,))
-    pm += goff
+    pm = __add(pm, goff)
     l, pbl =
       chain_valgrad_pullback!(pointer(g), parg2, layers, pointer(params), pm)
   end
diff --git a/src/dropout.jl b/src/dropout.jl
index 4cefd08..2ac46a0 100644
--- a/src/dropout.jl
+++ b/src/dropout.jl
@@ -120,7 +120,7 @@ function valgrad_layer!(
     VectorizedRNG.storestate!(rng, state)
   end # GC preserve  
 
-  pg, x, p, align(pu + ((static(7) + N) >>> static(3)))
+  pg, x, p, align(__add(pu, ((static(7) + N) >>> static(3))))
 end
 
 function pullback_arg!(
diff --git a/src/simple_chain.jl b/src/simple_chain.jl
index fdd43fc..4cda5f3 100644
--- a/src/simple_chain.jl
+++ b/src/simple_chain.jl
@@ -820,7 +820,7 @@ function valgrad_core(
 ) where {T}
   @unpack layers = c
   g = PtrArray(Ptr{T}(pu), (glen,))
-  l = unsafe_valgrad!(c, pu + align(glen * static_sizeof(T)), g, params, arg)
+  l = unsafe_valgrad!(c, __add(pu, align(glen * static_sizeof(T))), g, params, arg)
   Base.FastMath.add_fast(
     l,
     apply_penalty!(g, getpenalty(c), params, static_size(arg))
@@ -838,7 +838,7 @@ function valgrad_core_sarray(
   l = Base.FastMath.add_fast(
     unsafe_valgrad!(
       c,
-      pu + align(static(L) * static_sizeof(T)),
+      __add(pu, align(static(L) * static_sizeof(T))),
       g,
       params,
       arg
diff --git a/src/utils.jl b/src/utils.jl
index d56240d..e754956 100644
--- a/src/utils.jl
+++ b/src/utils.jl
@@ -336,3 +336,7 @@ function _add_memory(t::Tuple, p)
   (A, B...)
 end
 _add_memory(::Nothing, p) = nothing
+
+__add(x, y) = x + y
+__add(x::Ptr, ::StaticInt{N}) where {N} = x + N
+__add(::StaticInt{N}, y::Ptr) where {N} = y + N
diff --git a/test/runtests.jl b/test/runtests.jl
index 67b027f..f8a7574 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -1,12 +1,6 @@
 using SimpleChains
 using Test, Aqua, ForwardDiff, Zygote, ChainRules, Random
-@static if VERSION >= v"1.9"
-  using JET: @test_opt
-else
-  macro test_opt(ex)
-    nothing
-  end
-end
+using JET: @test_opt
 
 countallocations!(g, sc, x, p) = @allocated valgrad!(g, sc, x, p)
 dual(x::T) where {T} = ForwardDiff.Dual(x, 4randn(T), 4randn(T), 4randn(T))
@@ -84,12 +78,8 @@ InteractiveUtils.versioninfo(; verbose = true)
       SquaredLoss"""
 
       @test sprint((io, t) -> show(io, t), sc) == print_str0
-      if VERSION >= v"1.6"
-        @test sprint((io, t) -> show(io, t), scflp) == print_str1
-      else
-        # typename doesn't work on 1.5
-        @test_broken sprint((io, t) -> show(io, t), scflp) == print_str1
-      end
+      @test sprint((io, t) -> show(io, t), scflp) == print_str1
+
       p = SimpleChains.init_params(scflp, T; rng = Random.default_rng())
       g = similar(p)
       let sc = SimpleChains.remove_loss(sc)