diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d01f699f..eeaf7572 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -5,8 +5,6 @@ on:
     branches:
       - main
   pull_request:
-    branches:
-      - main
 
 jobs:
   lint:
diff --git a/notebooks/5.2-mpm-bg_biolume-PiO-paper.ipynb b/notebooks/5.2-mpm-bg_biolume-PiO-paper.ipynb
index 0d1d7ef0..f7a289b5 100644
--- a/notebooks/5.2-mpm-bg_biolume-PiO-paper.ipynb
+++ b/notebooks/5.2-mpm-bg_biolume-PiO-paper.ipynb
@@ -151,9 +151,9 @@
     "\n",
     "    # Find the high and low peaks\n",
     "    peaks, _ = signal.find_peaks(df[\"biolume_raw\"], height=max_bg)\n",
-    "    s_peaks = pd.Series(df[\"biolume_raw\"][peaks], index=df.index[peaks])\n",
-    "    nbflash_high = s_peaks[s_peaks > (pd.Series(s_med_bg[peaks], index=df.index[peaks]) + flash_threshold)]\n",
-    "    nbflash_low = s_peaks[s_peaks <= (pd.Series(s_med_bg[peaks], index=df.index[peaks]) + flash_threshold)]\n",
+    "    s_peaks = pd.Series(df[\"biolume_raw\"].iloc[peaks], index=df.index[peaks])\n",
+    "    nbflash_high = s_peaks[s_peaks > (pd.Series(s_med_bg.iloc[peaks], index=df.index[peaks]) + flash_threshold)]\n",
+    "    nbflash_low = s_peaks[s_peaks <= (pd.Series(s_med_bg.iloc[peaks], index=df.index[peaks]) + flash_threshold)]\n",
     "    nbflash_high_plot = nbflash_high.rename(\"nbflash_high\").hvplot(kind=\"scatter\", color=\"red\", marker=\"star\", s=50)\n",
     "    nbflash_low_plot = nbflash_low.rename(\"nbflash_low\").hvplot(kind=\"scatter\", color=\"goldenrod\", marker=\"star\", s=50)\n",
     "\n",
@@ -206,7 +206,7 @@
    "outputs": [],
    "source": [
     "# Compute flashes per liter - Units: flashes per liter = (flashes per second / mL/s) * 1000 mL/L\n",
-    "flow = ds_align[[\"biolume_flow\"]].sel(biolume_time=slice(\"2021-04-13 10:00:00\", \"2021-04-13 10:10:00\"))[\"biolume_flow\"].to_pandas().resample(\"1S\").mean().fillna(method=\"ffill\")\n",
+    "flow = ds_align[[\"biolume_flow\"]].sel(biolume_time=slice(\"2021-04-13 10:00:00\", \"2021-04-13 10:10:00\"))[\"biolume_flow\"].to_pandas().resample(\"1S\").mean().ffill()\n",
     "nbflash_high_per_liter = nbflash_high_counts.divide(flow) * 1000\n",
     "nbflash_low_per_liter = nbflash_low_counts.divide(flow) * 1000\n",
     "\n",
@@ -402,7 +402,7 @@
     "    if tv > s_peaks.index[k+1]:\n",
     "        # Encountered a new simple_depth point\n",
     "        k += 1\n",
-    "        if abs(s_peaks[k+1] - s_peaks[k]) > depth_threshold:\n",
+    "        if abs(s_peaks.iloc[k+1] - s_peaks.iloc[k]) > depth_threshold:\n",
     "            # Completed downcast or upcast\n",
     "            count += 1\n",
     "    peaks_profiles.append(count)\n",
@@ -443,7 +443,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.10.11"
+   "version": "3.10.14"
   },
   "vscode": {
    "interpreter": {
@@ -452,5 +452,5 @@
   }
  },
  "nbformat": 4,
- "nbformat_minor": 2
+ "nbformat_minor": 4
 }
diff --git a/src/data/test_process_i2map.py b/src/data/test_process_i2map.py
index 8d22ad9e..fd134014 100644
--- a/src/data/test_process_i2map.py
+++ b/src/data/test_process_i2map.py
@@ -30,7 +30,7 @@ def test_process_i2map(complete_i2map_processing):
     # but it will alert us if a code change unexpectedly changes the file size.
     # If code changes are expected to change the file size then we should
     # update the expected size here.
-    EXPECTED_SIZE_GITHUB = 58843
+    EXPECTED_SIZE_GITHUB = 58836
     EXPECTED_SIZE_ACT = 58816
     EXPECTED_SIZE_LOCAL = 58896
     if str(proc.args.base_path).startswith("/home/runner"):