diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index e436ad3..a6db490 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -1,6 +1,10 @@
 name: Test
 
-on: [push, pull_request]
+on:
+  push:
+    branches: ["main"]
+  pull_request:
+    branches: ["main"]
 
 permissions:
   contents: read
@@ -10,8 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        # Numba doesn't do 3.12 yet
-        python-version: ["3.9", "3.10", "3.11"]
+        python-version: ["3.9", "3.10", "3.11", "3.12"]
     steps:
     - uses: actions/checkout@v4
     - name: Set up Python ${{ matrix.python-version }}
diff --git a/README.md b/README.md
index dcd3b2a..4354288 100644
--- a/README.md
+++ b/README.md
@@ -141,6 +141,13 @@ Instruction-level parallelism, branch mispredictions, SIMD, and the CPU memory c
 
 ## Changelog
 
+### v0.2.1
+
+Bug fixes:
+
+* Run Python using `sys.executable`, so it works in more environments.
+  Thanks to Jeremiah England for the bug report.
+
 ### v0.2.0
 
 Added support for Jupyter profiling.
diff --git a/src/profila/_gdb.py b/src/profila/_gdb.py
index bd902e7..4278465 100644
--- a/src/profila/_gdb.py
+++ b/src/profila/_gdb.py
@@ -127,7 +127,7 @@ async def run_subprocess(
 
     process.stdin.write(b"-gdb-set mi-async\n")
     await _read_until_done(process)
-    process.stdin.write(b"-file-exec-file python\n")
+    process.stdin.write(f"-file-exec-file {quote(sys.executable)}\n".encode("utf-8"))
     await _read_until_done(process)
     process.stdin.write(
         b"-exec-arguments "