diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index ee9dc1e..b8103b3 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -21,20 +21,22 @@ jobs:
       fail-fast: false
       matrix:
         version:
-          - '1.9'
           - '1.10'
-          - '~1.11.0-0'
+          - '1.11'
           - 'nightly'
         os:
           - ubuntu-latest
           - windows-latest
-          - macos-latest
+          - macOS-13
         arch:
           - x64
         include:
           - os: macOS-14
             version: '1.10'
             arch: aarch64
+          - os: macOS-14
+            version: '1.11'
+            arch: aarch64
     steps:
       - uses: actions/checkout@v4
       - uses: julia-actions/setup-julia@v2
diff --git a/Project.toml b/Project.toml
index 0362728..f9f9dbd 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "MEDYANSimRunner"
 uuid = "b58a3b99-22e3-44d1-b5ea-258f082a6fe8"
 authors = ["nhz2 <nhz2@cornell.edu>"]
-version = "0.5.5"
+version = "0.5.6"
 
 [deps]
 ArgCheck = "dce04be8-c92d-5529-be00-80e4d2c0e197"
@@ -30,4 +30,4 @@ OrderedCollections = "1"
 Random = "1"
 SHA = "0.7, 1"
 SmallZarrGroups = "0.8.3"
-julia = "1.9"
+julia = "1.10"
diff --git a/test/Project.toml b/test/Project.toml
index 478d2ce..9ab1138 100644
--- a/test/Project.toml
+++ b/test/Project.toml
@@ -1,3 +1,6 @@
+[source]
+MEDYANSimRunner = {path = ".."}
+
 [deps]
 Dates = "ade2ca70-3891-5945-98fb-dc099432e06a"
 Distributed = "8ba89e20-285c-5b6f-9357-94700520ee1b"
diff --git a/test/example/output-ref-1_9/a/logs/2024-04-16T22-02-43_qTqXCG6WUzJx/error.log b/test/example/output-ref-1_9/a/logs/2024-04-16T22-02-43_qTqXCG6WUzJx/error.log
deleted file mode 100644
index e69de29..0000000
diff --git a/test/example/output-ref-1_9/a/logs/2024-04-16T22-02-43_qTqXCG6WUzJx/info.log b/test/example/output-ref-1_9/a/logs/2024-04-16T22-02-43_qTqXCG6WUzJx/info.log
deleted file mode 100644
index eb174e9..0000000
--- a/test/example/output-ref-1_9/a/logs/2024-04-16T22-02-43_qTqXCG6WUzJx/info.log
+++ /dev/null
@@ -1,38 +0,0 @@
-┌ Info: 2024-04-16T22:02:43 Starting new job.
-└ @ MEDYANSimRunner /home/nathan/juliadev/MEDYANSimRunner/src/run-sim.jl:133
-┌ Info: 2024-04-16T22:02:43 Julia Version: 1.9.4
-│ MEDYANSimRunner Version: 0.5.4
-│ OS: Linux (x86_64-linux-gnu)
-│ CPU: AMD Ryzen 7 7800X3D 8-Core Processor
-│ WORD_SIZE: 64
-│ LLVM: libLLVM-14.0.6 (ORCJIT znver3)
-│ Threads: 1 on 16 virtual cores
-└ @ MEDYANSimRunner /home/nathan/juliadev/MEDYANSimRunner/src/run-sim.jl:134
-┌ Info: 2024-04-16T22:02:43 Setup complete.
-└ @ MEDYANSimRunner /home/nathan/juliadev/MEDYANSimRunner/src/run-sim.jl:145
-┌ Info: 2024-04-16T22:02:43 Simulation started.
-└ @ MEDYANSimRunner /home/nathan/juliadev/MEDYANSimRunner/src/run-sim.jl:154
-┌ Info: 2024-04-16T22:02:43 step 1 of 11 done
-└ @ MEDYANSimRunner /home/nathan/juliadev/MEDYANSimRunner/src/run-sim.jl:168
-┌ Info: 2024-04-16T22:02:43 step 2 of 11 done
-└ @ MEDYANSimRunner /home/nathan/juliadev/MEDYANSimRunner/src/run-sim.jl:168
-┌ Info: 2024-04-16T22:02:43 step 3 of 11 done
-└ @ MEDYANSimRunner /home/nathan/juliadev/MEDYANSimRunner/src/run-sim.jl:168
-┌ Info: 2024-04-16T22:02:43 step 4 of 11 done
-└ @ MEDYANSimRunner /home/nathan/juliadev/MEDYANSimRunner/src/run-sim.jl:168
-┌ Info: 2024-04-16T22:02:43 step 5 of 11 done
-└ @ MEDYANSimRunner /home/nathan/juliadev/MEDYANSimRunner/src/run-sim.jl:168
-┌ Info: 2024-04-16T22:02:43 step 6 of 11 done
-└ @ MEDYANSimRunner /home/nathan/juliadev/MEDYANSimRunner/src/run-sim.jl:168
-┌ Info: 2024-04-16T22:02:43 step 7 of 11 done
-└ @ MEDYANSimRunner /home/nathan/juliadev/MEDYANSimRunner/src/run-sim.jl:168
-┌ Info: 2024-04-16T22:02:43 step 8 of 11 done
-└ @ MEDYANSimRunner /home/nathan/juliadev/MEDYANSimRunner/src/run-sim.jl:168
-┌ Info: 2024-04-16T22:02:43 step 9 of 11 done
-└ @ MEDYANSimRunner /home/nathan/juliadev/MEDYANSimRunner/src/run-sim.jl:168
-┌ Info: 2024-04-16T22:02:43 step 10 of 11 done
-└ @ MEDYANSimRunner /home/nathan/juliadev/MEDYANSimRunner/src/run-sim.jl:168
-┌ Info: 2024-04-16T22:02:43 step 11 of 11 done
-└ @ MEDYANSimRunner /home/nathan/juliadev/MEDYANSimRunner/src/run-sim.jl:168
-┌ Info: 2024-04-16T22:02:43 Simulation completed.
-└ @ MEDYANSimRunner /home/nathan/juliadev/MEDYANSimRunner/src/run-sim.jl:331
diff --git a/test/example/output-ref-1_9/a/logs/2024-04-16T22-02-43_qTqXCG6WUzJx/warn.log b/test/example/output-ref-1_9/a/logs/2024-04-16T22-02-43_qTqXCG6WUzJx/warn.log
deleted file mode 100644
index e69de29..0000000
diff --git a/test/example/output-ref-1_9/a/traj/footer.json b/test/example/output-ref-1_9/a/traj/footer.json
deleted file mode 100644
index 862c1e7..0000000
--- a/test/example/output-ref-1_9/a/traj/footer.json
+++ /dev/null
@@ -1,4 +0,0 @@
-{
-    "steps": 11,
-    "prev_sha256": "5429ba43e4b1c417f2840e0a1bb8116a67d1715d471116d8102f9ebee00d7003"
-}
\ No newline at end of file
diff --git a/test/example/output-ref-1_9/a/traj/header.json b/test/example/output-ref-1_9/a/traj/header.json
deleted file mode 100644
index cd28081..0000000
--- a/test/example/output-ref-1_9/a/traj/header.json
+++ /dev/null
@@ -1,4 +0,0 @@
-{
-    "version": "1.0.0",
-    "model_name": "fibonacci sequence"
-}
\ No newline at end of file
diff --git a/test/example/output-ref-1_9/a/traj/snap0.zarr.zip b/test/example/output-ref-1_9/a/traj/snap0.zarr.zip
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diff --git a/test/example/output-ref-1_9/a/traj/snap8.zarr.zip b/test/example/output-ref-1_9/a/traj/snap8.zarr.zip
deleted file mode 100644
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diff --git a/test/example/output-ref-1_9/a/traj/snap9.zarr.zip b/test/example/output-ref-1_9/a/traj/snap9.zarr.zip
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diff --git a/test/test_ref_out.jl b/test/test_ref_out.jl
index 2246d63..e50daf9 100644
--- a/test/test_ref_out.jl
+++ b/test/test_ref_out.jl
@@ -12,10 +12,10 @@ module UserCode
 end
 @testset "reference output" begin
 
-ref_out = if VERSION >= v"1.10.0-rc1"
+ref_out = if VERSION >= v"1.10"
     joinpath(@__DIR__, "example/output-ref-1_10")
 else
-    joinpath(@__DIR__, "example/output-ref-1_9")
+    error("Julia version $(VERSION) isn't supported")
 end
 warn_only_logger = MinLevelLogger(current_logger(), Logging.Warn);