diff --git a/Cargo.toml b/Cargo.toml
index 4274ce0..d6fc729 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [workspace.package]
 edition = "2024"
-rust-version = "1.87" # To align with the rust-toolchain.toml
+rust-version = "1.88" # To align with the rust-toolchain.toml
 
 [workspace]
 members = [
diff --git a/crates/brioche-resources/src/lib.rs b/crates/brioche-resources/src/lib.rs
index 2d983ff..1a7a688 100644
--- a/crates/brioche-resources/src/lib.rs
+++ b/crates/brioche-resources/src/lib.rs
@@ -17,19 +17,19 @@ pub fn find_resource_dirs(
         paths.push(PathBuf::from(pack_resource_dir));
     }
 
-    if include_readonly {
-        if let Some(input_resource_dirs) = std::env::var_os("BRIOCHE_INPUT_RESOURCE_DIRS") {
-            if let Some(input_resource_dirs) = <[u8]>::from_os_str(&input_resource_dirs) {
-                for input_resource_dir in input_resource_dirs.split_str(b":") {
-                    if let Ok(path) = input_resource_dir.to_path() {
-                        paths.push(path.to_owned());
-                    }
+    if include_readonly
+        && let Some(input_resource_dirs) = std::env::var_os("BRIOCHE_INPUT_RESOURCE_DIRS")
+    {
+        if let Some(input_resource_dirs) = <[u8]>::from_os_str(&input_resource_dirs) {
+            for input_resource_dir in input_resource_dirs.split_str(b":") {
+                if let Ok(path) = input_resource_dir.to_path() {
+                    paths.push(path.to_owned());
                 }
             }
+        }
 
-            for input_resource_dir in std::env::split_paths(&input_resource_dirs) {
-                paths.push(input_resource_dir);
-            }
+        for input_resource_dir in std::env::split_paths(&input_resource_dirs) {
+            paths.push(input_resource_dir);
         }
     }
 
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index 94ec141..afe74e2 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -1,4 +1,4 @@
 [toolchain]
-channel = "1.87"
+channel = "1.88"
 profile = "default"
 targets = ["x86_64-unknown-linux-musl"]