diff --git a/.typos.toml b/.typos.toml
new file mode 100644
index 0000000..79b68a4
--- /dev/null
+++ b/.typos.toml
@@ -0,0 +1 @@
+[default.extend-words]
\ No newline at end of file
diff --git a/Project.toml b/Project.toml
index f64e36e..958563b 100644
--- a/Project.toml
+++ b/Project.toml
@@ -14,20 +14,27 @@ RecursiveArrayTools = "731186ca-8d62-57ce-b412-fbd966d074cd"
 StaticArrays = "90137ffa-7385-5640-81b9-e52037218182"
 
 [compat]
+Aqua = "0.8"
 ArrayInterface = "7"
 ChainRulesCore = "1"
+ChainRulesTestUtils = "1"
 ForwardDiff = "0.10.3"
+InteractiveUtils = "1"
+LinearAlgebra = "1"
 MacroTools = "0.5"
+OrdinaryDiffEq = "6"
 PreallocationTools = "0.4"
 RecursiveArrayTools = "2,3"
 StaticArrays = "1.0"
+Test = "1"
 julia = "1.6"
 
 [extras]
+Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
 ChainRulesTestUtils = "cdddcdb0-9152-4a09-a978-84456f9df70a"
 InteractiveUtils = "b77e0a4c-d291-57a0-90e8-8db25a27a240"
 OrdinaryDiffEq = "1dea7af3-3e70-54e6-95c3-0bf5283fa5ed"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [targets]
-test = ["Test", "OrdinaryDiffEq", "InteractiveUtils", "ChainRulesTestUtils"]
+test = ["Aqua", "Test", "OrdinaryDiffEq", "InteractiveUtils", "ChainRulesTestUtils"]
diff --git a/README.md b/README.md
index 13b3cc7..d0c5c95 100644
--- a/README.md
+++ b/README.md
@@ -79,7 +79,7 @@ julia> SLArray{Tuple{2, 2}}(a = 1, b = 2, c = 3, d = 4)
 
 Constructing copies with some items changed is supported by
 a keyword constructor whose first argument is the source and
-additonal keyword arguments change several entries.
+additional keyword arguments change several entries.
 
 ```julia
 julia> v1 = SLVector(a = 1.1, b = 2.2, c = 3.3);
diff --git a/src/LabelledArrays.jl b/src/LabelledArrays.jl
index 7ab6123..7816c8d 100644
--- a/src/LabelledArrays.jl
+++ b/src/LabelledArrays.jl
@@ -84,8 +84,6 @@ end
 
 export SLArray, LArray, SLVector, LVector, @SLVector, @LArray, @LVector, @SLArray
 
-export @SLSliced, @LSliced
-
-export symbols, dimSymbols, rowSymbols, colSymbols
+export symbols
 
 end # module
diff --git a/src/larray.jl b/src/larray.jl
index 3416618..5142621 100644
--- a/src/larray.jl
+++ b/src/larray.jl
@@ -286,7 +286,7 @@ macro LVector(type, syms)
     end
 end
 
-#the following gives errror: TypeError: in <:, expected Type, got TypeVar
+#the following gives error: TypeError: in <:, expected Type, got TypeVar
 #symbols(::LArray{T,N,D<:AbstractArray{T,N},Syms}) where {T,N,D,Syms} = Syms
 
 """
diff --git a/test/qa.jl b/test/qa.jl
new file mode 100644
index 0000000..ac0e278
--- /dev/null
+++ b/test/qa.jl
@@ -0,0 +1,12 @@
+using LabelledArrays, Aqua
+@testset "Aqua" begin
+    Aqua.find_persistent_tasks_deps(LabelledArrays)
+    Aqua.test_ambiguities(LabelledArrays, recursive = false, broken = true)
+    Aqua.test_deps_compat(LabelledArrays)
+    Aqua.test_piracies(LabelledArrays,
+        treat_as_own = [])
+    Aqua.test_project_extras(LabelledArrays)
+    Aqua.test_stale_deps(LabelledArrays)
+    Aqua.test_unbound_args(LabelledArrays)
+    Aqua.test_undefined_exports(LabelledArrays)
+end
diff --git a/test/runtests.jl b/test/runtests.jl
index 787f35e..a4f5842 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -5,6 +5,7 @@ using InteractiveUtils
 using ChainRulesTestUtils
 
 @time begin
+    @time @testset "Quality Assurance" begin include("qa.jl") end
     @time @testset "SLArrays" begin include("slarrays.jl") end
     @time @testset "LArrays" begin include("larrays.jl") end
     @time @testset "DiffEq" begin include("diffeq.jl") end