diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 43e4761..45a5d19 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,7 +18,7 @@ jobs:
       matrix:
         version:
           - '1'
-          - 'nightly'
+          - 'pre'
         os:
           - ubuntu-latest
           - macOS-latest
@@ -30,7 +30,7 @@ jobs:
           - "2"
     steps:
       - uses: actions/checkout@v2
-      - uses: julia-actions/setup-julia@v1
+      - uses: julia-actions/setup-julia@v2
         with:
           version: ${{ matrix.version }}
           arch: ${{ matrix.julia-arch }}
@@ -55,7 +55,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - uses: julia-actions/setup-julia@v1
+      - uses: julia-actions/setup-julia@v2
         with:
           version: '1'
       - run: |
diff --git a/Project.toml b/Project.toml
index ce67087..e795c30 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "LaserTypes"
 uuid = "e07c0bfa-524c-4f35-a151-c3dd916fa2f0"
 authors = ["Sebastian Micluța-Câmpeanu <m.c.sebastian95@gmail.com>", "Petru-Vlad Toma <tomapv@gmail.com>"]
-version = "0.1.9"
+version = "0.2.0"
 
 [deps]
 AutoHashEquals = "15f4f7f2-30c1-5605-9d31-71845cf9641f"
@@ -31,8 +31,9 @@ julia = "1"
 
 [extras]
 CSV = "336ed68f-0bac-5ca0-87d4-7b16caf5d00b"
+JET = "c3a54625-cd67-489e-a8e7-0a5a0ff4e31b"
 SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [targets]
-test = ["Test", "SafeTestsets", "CSV"]
+test = ["Test", "SafeTestsets", "CSV", "JET"]
diff --git a/src/electricfield.jl b/src/electricfield.jl
index 2b199c2..3e5a400 100644
--- a/src/electricfield.jl
+++ b/src/electricfield.jl
@@ -1,7 +1,5 @@
 # # Electric Field
 
-E(r, t, laser, symbol::Symbol) = E(r, t, laser, Val(symbol))
-
 function E(r, t, laser, v::Val{T}) where T
     @error "Got unsupported field type :$T\n Valid arguments are :real and :complex."
 end
@@ -20,8 +18,8 @@ function E(r, t, laser, ::Val{:complex})
     return inv_rotate(R, ElectricField)
 end
 
-E(r, t, laser) = E(r, t, laser, :real)
-E(r, t, laser, ::Val{:real}) = real(E(r, t, laser, :complex))
+E(r, t, laser) = E(r, t, laser, Val(:real))
+E(r, t, laser, ::Val{:real}) = real(E(r, t, laser, Val(:complex)))
 
 function E(x::SVector{4}, laser::AbstractLaser)
     inv_c = immutable_cache(laser, :inv_c)
diff --git a/src/faraday.jl b/src/faraday.jl
index cf2398f..b08517d 100644
--- a/src/faraday.jl
+++ b/src/faraday.jl
@@ -1,7 +1,5 @@
 # # 4-Potential
 
-EB(r, t, laser, symbol::Symbol) = EB(r, t, laser, Val(symbol))
-
 function EB(r, t, laser, v::Val{T}) where T
     @error "Got unsupported field type :$T\n Valid arguments are :real and :complex."
 end
@@ -20,8 +18,8 @@ function EB(r, t, laser, ::Val{:complex})
     return inv_rotate.((R,), E_B)
 end
 
-EB(r, t, laser) = EB(r, t, laser, :real)
-EB(r, t, laser, ::Val{:real}) = real.(EB(r, t, laser, :complex))
+EB(r, t, laser) = EB(r, t, laser, Val(:real))
+EB(r, t, laser, ::Val{:real}) = real.(EB(r, t, laser, Val(:complex)))
 
 function EB(r, laser)
     @assert length(r) == 3 "The laser is only defined in 3D"
diff --git a/src/magneticfield.jl b/src/magneticfield.jl
index 5a1e511..317977f 100644
--- a/src/magneticfield.jl
+++ b/src/magneticfield.jl
@@ -1,7 +1,5 @@
 # # Magnetic Field
 
-B(r, t, laser, symbol::Symbol) = B(r, t, laser, Val(symbol))
-
 function B(r, t, laser, v::Val{T}) where T
     @error "Got unsupported field type :$T\n Valid arguments are :real and :complex."
 end
@@ -20,8 +18,8 @@ function B(r, t, laser, ::Val{:complex})
     return inv_rotate(R, MagneticField)
 end
 
-B(r, t, laser) = B(r, t, laser, :real)
-B(r, t, laser, ::Val{:real}) = real(B(r, t, laser, :complex))
+B(r, t, laser) = B(r, t, laser, Val(:real))
+B(r, t, laser, ::Val{:real}) = real(B(r, t, laser, Val(:complex)))
 
 function B(x::SVector{4}, laser::AbstractLaser)
     inv_c = immutable_cache(laser, :inv_c)
diff --git a/test/qa.jl b/test/qa.jl
new file mode 100644
index 0000000..90f328e
--- /dev/null
+++ b/test/qa.jl
@@ -0,0 +1,40 @@
+using LaserTypes, Test
+using JET
+
+@testset "JET type stability tests" begin
+    @testset "$laser" for laser in [GaussLaser, LaguerreGaussLaser]
+        # Setup laser with atomic units (simplest for testing)
+        if laser == GaussLaser
+            lt_laser = setup_laser(GaussLaser, :atomic, profile=ConstantProfile())
+        else
+            lt_laser = setup_laser(LaguerreGaussLaser, :atomic, profile=ConstantProfile(), p=1, m=1)
+        end
+
+        r = [0.0, 0.0, 0.0]
+        t = 0.0
+
+        @testset "E field - Val(:real)" begin
+            @test_opt LaserTypes.E(r, t, lt_laser, Val(:real))
+        end
+
+        @testset "E field - Val(:complex)" begin
+            @test_opt LaserTypes.E(r, t, lt_laser, Val(:complex))
+        end
+
+        @testset "B field - Val(:real)" begin
+            @test_opt LaserTypes.B(r, t, lt_laser, Val(:real))
+        end
+
+        @testset "B field - Val(:complex)" begin
+            @test_opt LaserTypes.B(r, t, lt_laser, Val(:complex))
+        end
+
+        @testset "EB field - Val(:real)" begin
+            @test_opt LaserTypes.EB(r, t, lt_laser, Val(:real))
+        end
+
+        @testset "EB field - Val(:complex)" begin
+            @test_opt LaserTypes.EB(r, t, lt_laser, Val(:complex))
+        end
+    end
+end
diff --git a/test/runtests.jl b/test/runtests.jl
index d287c2f..51de03d 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -9,4 +9,5 @@ using Test, SafeTestsets
     @safetestset "Fμν" begin include("faraday.jl") end
     @safetestset "Derived" begin include("derived.jl") end
     @safetestset "Show" begin include("show.jl") end
+    @safetestset "QA" begin include("qa.jl") end
 end