diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 5d28ca0..d80035c 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -25,7 +25,7 @@ jobs:
     steps:
     - uses: actions/checkout@v2
     - name: Lint workflow
-      uses: snakemake/snakemake-github-action@v1.24.0
+      uses: ezherman/snakemake-github-action@5027c0e706ada924ab91e0501bd92185fc98de3c
       with:
         directory: .
         snakefile: workflow/Snakefile
@@ -40,15 +40,15 @@ jobs:
     - uses: actions/checkout@v2
 
     - name: Test workflow
-      uses: snakemake/snakemake-github-action@v1.24.0
+      uses: ezherman/snakemake-github-action@5027c0e706ada924ab91e0501bd92185fc98de3c
       with:
         directory: .test
         snakefile: workflow/Snakefile
-        args: "--use-conda --show-failed-logs --cores 3 --conda-cleanup-pkgs cache --all-temp"
+        args: "--use-conda --show-failed-logs --cores 1 --conda-cleanup-pkgs cache --all-temp"
 
     - name: Test report
-      uses: snakemake/snakemake-github-action@v1.24.0
+      uses: ezherman/snakemake-github-action@5027c0e706ada924ab91e0501bd92185fc98de3c
       with:
         directory: .test
         snakefile: workflow/Snakefile
-        args: "--report report.zip"
\ No newline at end of file
+        args: "--report report.zip"
diff --git a/workflow/Snakefile b/workflow/Snakefile
index 7ddaaa0..46dc637 100644
--- a/workflow/Snakefile
+++ b/workflow/Snakefile
@@ -1,11 +1,15 @@
-# Main entrypoint of the workflow. 
-# Please follow the best practices: 
+# Main entrypoint of the workflow.
+# Please follow the best practices:
 # https://snakemake.readthedocs.io/en/stable/snakefiles/best_practices.html,
-# in particular regarding the standardized folder structure mentioned there. 
+# in particular regarding the standardized folder structure mentioned there.
+
 
 rule touch:
-    output: "file.txt"
-    conda: "../envs/empty.yaml"
-    log: "logs/touch.log"
+    output:
+        "file.txt",
+    conda:
+        "envs/empty.yaml"
+    log:
+        "logs/touch.log",
     shell:
         "touch {output}"