diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 1bda139..0dfe787 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -16,12 +16,12 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.7]
+        python-version: ["3.9"]
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
       - name: Install Fish
@@ -42,7 +42,7 @@ jobs:
       - name: Check for release
         if: github.ref == 'refs/heads/main'
         run: |
-          python -m pip install githubrelease httpx==0.16.1 autopub
+          python -m pip install githubrelease httpx==0.18.2 autopub
           echo "##[set-output name=release;]$(autopub check)"
         id: check_release
       - name: Deploy
diff --git a/RELEASE.md b/RELEASE.md
new file mode 100644
index 0000000..b8278ad
--- /dev/null
+++ b/RELEASE.md
@@ -0,0 +1,3 @@
+Release type: patch
+
+Improve resiliency of `check_fish_version()` function to invisible characters such as tabs.
diff --git a/virtualfish/loader/cli.py b/virtualfish/loader/cli.py
index d292ff2..5582c04 100644
--- a/virtualfish/loader/cli.py
+++ b/virtualfish/loader/cli.py
@@ -28,7 +28,7 @@ def check_fish_version():
         import subprocess
         from packaging import version
 
-        cmd = ["fish", "-c", "echo $version"]
+        cmd = ["fish", "-N", "-c", "echo $version"]
         fish_version = subprocess.check_output(cmd).decode("utf-8").strip()
         # Remove any extraneous hyphen-suffixed bits
         fish_version = fish_version.partition("-")[0]