diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 8ca98f9..98e23b7 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -5,7 +5,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        julia-version: ['1.6']
+        julia-version: ['lts', '1']
         os: [ubuntu-latest]
     steps:
       - uses: actions/checkout@v1.0.0
diff --git a/test/tests-core.jl b/test/tests-core.jl
index fa634fe..9bb7944 100644
--- a/test/tests-core.jl
+++ b/test/tests-core.jl
@@ -731,7 +731,7 @@ function test_dsp()
   @test dzt(4.2x + 2.7y, 64) ≈ 4.2Zx + 2.7Zy
 
   x = compose(mseq(12), [0.1, 0.2], [1.0, 0.7]; duration=1.0, fs=8000)
-  x += 0.1 * randn(size(x))
+  x += 0.1 * randn(rng, size(x))
   t, a = decompose(mseq(12), x)
   @test t ≈ [0.1, 0.2]
   @test eltype(a) == Float64