diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index fc50f82..3bc0dda 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -55,11 +55,10 @@ jobs:
           sudo update-locale LANG=en_US.UTF-8
 
       - name: Run pipeline with test data
-        # TODO nf-core: You can customise CI pipeline run tests as required
-        # For example: adding multiple test runs with different parameters
-        # Remember that you can parallelise this by using strategy.matrix
-        run: |
-          nextflow run ${GITHUB_WORKSPACE} -profile test,docker --outdir ./results ${{ matrix.parameters }}
+        uses: Wandalen/wretry.action@v1.0.11
+        with:
+          command: nextflow run ${GITHUB_WORKSPACE} -profile test,docker --outdir ./results ${{ matrix.parameters }}
+          attempt_limit: 3
 
   motus:
     name: Test mOTUs with workflow parameters
@@ -79,14 +78,9 @@ jobs:
         uses: actions/checkout@v2
 
       - name: Install Nextflow
-        env:
-          NXF_VER: ${{ matrix.NXF_VER }}
-          # Uncomment only if the edge release is more recent than the latest stable release
-          # See https://github.com/nextflow-io/nextflow/issues/2467
-          # NXF_EDGE: ${{ matrix.NXF_EDGE }}
-        run: |
-          wget -qO- get.nextflow.io | bash
-          sudo mv nextflow /usr/local/bin/
+        uses: nf-core/setup-nextflow@v1
+        with:
+          version: "${{ matrix.NXF_VER }}"
 
       - name: Show current locale
         run: locale
diff --git a/bin/check_samplesheet.py b/bin/check_samplesheet.py
index 7d6c1a9..ca54ed9 100755
--- a/bin/check_samplesheet.py
+++ b/bin/check_samplesheet.py
@@ -6,10 +6,10 @@ import sys
 import errno
 import argparse
 
+
 def parse_args(args=None):
-    Description = (
-        "Reformat nf-core/taxprofiler samplesheet file and check its contents."
-    )
+    Description = "Reformat nf-core/taxprofiler samplesheet file and check its contents."
+
     Epilog = "Example usage: python check_samplesheet.py <FILE_IN> <FILE_OUT>"
 
     parser = argparse.ArgumentParser(description=Description, epilog=Epilog)
@@ -17,6 +17,7 @@ def parse_args(args=None):
     parser.add_argument("FILE_OUT", help="Output file.")
     return parser.parse_args(args)
 
+
 def make_dir(path):
     if len(path) > 0:
         try:
@@ -25,6 +26,7 @@ def make_dir(path):
             if exception.errno != errno.EEXIST:
                 raise exception
 
+
 def print_error(error, context="Line", context_str=""):
     error_str = "ERROR: Please check samplesheet -> {}".format(error)
     if context != "" and context_str != "":
@@ -34,6 +36,7 @@ def print_error(error, context="Line", context_str=""):
     print(error_str)
     sys.exit(1)
 
+
 def check_samplesheet(file_in, file_out):
     """
     This function checks that the samplesheet follows the following structure:
@@ -117,9 +120,7 @@ def check_samplesheet(file_in, file_out):
             num_cols = len([x for x in lspl if x])
             if num_cols < MIN_COLS:
                 print_error(
-                    "Invalid number of populated columns (minimum = {})!".format(
-                        MIN_COLS
-                    ),
+                    "Invalid number of populated columns (minimum = {})!".format(MIN_COLS),
                     "Line",
                     line,
                 )
@@ -182,13 +183,9 @@ def check_samplesheet(file_in, file_out):
             ## Auto-detect paired-end/single-end
             if sample and fastq_1 and fastq_2:  ## Paired-end short reads
                 sample_info.extend(["0", fastq_1, fastq_2, fasta])
-            elif (
-                sample and fastq_1 and not fastq_2
-            ):  ## Single-end short/long fastq reads
+            elif sample and fastq_1 and not fastq_2:  ## Single-end short/long fastq reads
                 sample_info.extend(["1", fastq_1, fastq_2, fasta])
-            elif (
-                sample and fasta and not fastq_1 and not fastq_2
-            ):  ## Single-end long reads
+            elif sample and fasta and not fastq_1 and not fastq_2:  ## Single-end long reads
                 sample_info.extend(["1", fastq_1, fastq_2, fasta])
             elif fasta and (fastq_1 or fastq_2):
                 print_error(
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..0d62beb
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,10 @@
+# Config file for Python. Mostly used to configure linting of bin/check_samplesheet.py with Black.
+# Should be kept the same as nf-core/tools to avoid fighting with template synchronisation.
+[tool.black]
+line-length = 120
+target_version = ["py37", "py38", "py39", "py310"]
+
+[tool.isort]
+profile = "black"
+known_first_party = ["nf_core"]
+multi_line_output = 3