diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index cfb639f..eb68408 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,7 +16,7 @@ jobs:
         java: [ '8', '11', '16', '17', '19' ]
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Set up JDK ${{ matrix.java }}
       uses: actions/setup-java@v3
diff --git a/.github/workflows/omv-ci.yml b/.github/workflows/omv-ci.yml
index bec4a7c..0efd825 100644
--- a/.github/workflows/omv-ci.yml
+++ b/.github/workflows/omv-ci.yml
@@ -13,7 +13,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [ 3.9 ]
+        python-version: [ "3.9" ]
         engine:
           - jNeuroML
           - jNeuroML_Brian2
@@ -25,10 +25,10 @@ jobs:
           - PyLEMS_NeuroML2
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     
     - name: Set up Python  ${{ matrix.python-version }}
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@v5
       with:
         python-version:  ${{ matrix.python-version }}
 
diff --git a/LEMSexamples/test/.test.ex0.jnmleden.omt b/LEMSexamples/test/.test.ex0.jnmleden.omt
index 51a8777..e24e460 100644
--- a/LEMSexamples/test/.test.ex0.jnmleden.omt
+++ b/LEMSexamples/test/.test.ex0.jnmleden.omt
@@ -25,7 +25,7 @@ experiments:
         spike detection:
           method: threshold
           threshold: -55.1
-        tolerance: 0.00010867391304343428
+        tolerance: 0.000108696
   iafPop0:
     observables:
       spike times:
@@ -36,7 +36,7 @@ experiments:
         spike detection:
           method: threshold
           threshold: -55.1
-        tolerance: 0.00014932775619959672
+        tolerance: 0.00014939
   iafRefPop0:
     observables:
       spike times: