diff --git a/Cargo.lock b/Cargo.lock
index 62322ec8f9..d0aeb44583 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2611,6 +2611,15 @@ dependencies = [
  "winapi-util",
 ]
 
+[[package]]
+name = "scc"
+version = "2.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "46e6f046b7fef48e2660c57ed794263155d713de679057f2d0c169bfc6e756cc"
+dependencies = [
+ "sdd",
+]
+
 [[package]]
 name = "schannel"
 version = "0.1.23"
@@ -2661,6 +2670,12 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "sdd"
+version = "3.0.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "490dcfcbfef26be6800d11870ff2df8774fa6e86d047e3e8c8a76b25655e41ca"
+
 [[package]]
 name = "secrecy"
 version = "0.8.0"
@@ -2777,6 +2792,7 @@ dependencies = [
  "sentry",
  "serde",
  "serde_json",
+ "serial_test",
  "sha1_smol",
  "sourcemap",
  "symbolic",
@@ -2890,6 +2906,31 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "serial_test"
+version = "3.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1b258109f244e1d6891bf1053a55d63a5cd4f8f4c30cf9a1280989f80e7a1fa9"
+dependencies = [
+ "futures",
+ "log",
+ "once_cell",
+ "parking_lot",
+ "scc",
+ "serial_test_derive",
+]
+
+[[package]]
+name = "serial_test_derive"
+version = "3.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5d69265a08751de7844521fd15003ae0a888e035773ba05695c5c759a6f89eef"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "sha1"
 version = "0.10.6"
diff --git a/Cargo.toml b/Cargo.toml
index 3a5fe55904..6f9aeb74e0 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -86,6 +86,7 @@ assert_cmd = "2.0.11"
 insta = { version = "1.26.0", features = ["redactions", "yaml"] }
 mockito = "1.6.1"
 rstest = "0.18.2"
+serial_test = "3.1.1"
 tempfile = "3.8.1"
 trycmd = "0.14.11"
 
diff --git a/src/utils/vcs.rs b/src/utils/vcs.rs
index d47da5d815..10315867e0 100644
--- a/src/utils/vcs.rs
+++ b/src/utils/vcs.rs
@@ -806,6 +806,7 @@ mod tests {
     use {
         crate::api::RepoProvider,
         insta::{assert_debug_snapshot, assert_yaml_snapshot},
+        serial_test::serial,
         std::fs::File,
         std::io::Write as _,
         std::path::Path,
@@ -1672,6 +1673,7 @@ mod tests {
     }
 
     #[test]
+    #[serial(github_event_path)]
     fn test_find_head_with_github_event_path() {
         use std::fs;
 
@@ -1751,6 +1753,7 @@ mod tests {
     }
 
     #[test]
+    #[serial(github_event_path)]
     fn test_find_base_sha() {
         use std::fs;