diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 881842b..6b9f61e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -22,9 +22,24 @@ jobs:
         with:
           save-cache: ${{ github.ref_name == 'main' }}
 
-      - run: cargo check
+      - uses: actions/setup-node@v4
+        with:
+          node-version: lts/*
+
+      - name: Prepare fixtures
+        run: |
+          corepack enable
+          cd fixtures/global-cache
+          yarn install
+
+      - name: Build
+        run: cargo build
+
+      - name: Check
+        run: cargo check
 
-      - run: cargo test
+      - name: Run tests
+        run: cargo test
 
   clippy:
     runs-on: ubuntu-latest
diff --git a/Cargo.lock b/Cargo.lock
index 71bc4d3..0a71646 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -93,6 +93,27 @@ dependencies = [
  "once_cell",
 ]
 
+[[package]]
+name = "dirs"
+version = "6.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c3e8aa94d75141228480295a7d0e7feb620b1a5ad9f12bc40be62411e38cce4e"
+dependencies = [
+ "dirs-sys",
+]
+
+[[package]]
+name = "dirs-sys"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e01a3366d27ee9890022452ee61b2b63a67e6f13f58900b651ff5665f0bb1fab"
+dependencies = [
+ "libc",
+ "option-ext",
+ "redox_users",
+ "windows-sys 0.60.2",
+]
+
 [[package]]
 name = "endian-type"
 version = "0.1.2"
@@ -171,6 +192,17 @@ dependencies = [
  "slab",
 ]
 
+[[package]]
+name = "getrandom"
+version = "0.2.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "335ff9f135e4384c8150d6f27c6daed433577f86b4750418338c01a1a2528592"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "wasi",
+]
+
 [[package]]
 name = "glob"
 version = "0.3.2"
@@ -211,6 +243,16 @@ version = "0.2.174"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1171693293099992e19cddea4e8b849964e9846f4acee11b3948bcc337be8776"
 
+[[package]]
+name = "libredox"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1580801010e535496706ba011c15f8532df6b42297d2e471fec38ceadd8c0638"
+dependencies = [
+ "bitflags 2.9.1",
+ "libc",
+]
+
 [[package]]
 name = "mach2"
 version = "0.4.3"
@@ -289,6 +331,12 @@ version = "1.21.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "42f5e15c9953c5e4ccceeb2e7382a716482c34515315f7b03532b8b4e8393d2d"
 
+[[package]]
+name = "option-ext"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "04744f49eae99ab78e0d5c0b603ab218f515ea8cfe5a456d7629ad883a3b6e7d"
+
 [[package]]
 name = "path-slash"
 version = "0.2.1"
@@ -320,6 +368,7 @@ dependencies = [
  "byteorder",
  "clean-path",
  "concurrent_lru",
+ "dirs",
  "fancy-regex",
  "miniz_oxide",
  "mmap-rs",
@@ -370,6 +419,17 @@ dependencies = [
  "nibble_vec",
 ]
 
+[[package]]
+name = "redox_users"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dd6f9d3d47bdd2ad6945c5015a226ec6155d0bcdfd8f7cd29f86b71f8de99d2b"
+dependencies = [
+ "getrandom",
+ "libredox",
+ "thiserror 2.0.12",
+]
+
 [[package]]
 name = "regex"
 version = "1.11.1"
@@ -613,6 +673,12 @@ dependencies = [
  "winapi-util",
 ]
 
+[[package]]
+name = "wasi"
+version = "0.11.1+wasi-snapshot-preview1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ccf3ec651a847eb01de73ccad15eb7d99f80485de043efb2f370cd654f4ea44b"
+
 [[package]]
 name = "widestring"
 version = "1.2.0"
@@ -625,7 +691,7 @@ version = "0.1.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cf221c93e13a30d793f7645a0e7762c55d169dbb0a49671918a2319d289b10bb"
 dependencies = [
- "windows-sys",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -646,6 +712,15 @@ dependencies = [
  "windows-targets 0.52.6",
 ]
 
+[[package]]
+name = "windows-sys"
+version = "0.60.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f2f500e4d28234f72040990ec9d39e3a6b950f9f22d3dba18416c35882612bcb"
+dependencies = [
+ "windows-targets 0.53.2",
+]
+
 [[package]]
 name = "windows-targets"
 version = "0.48.5"
@@ -670,13 +745,29 @@ dependencies = [
  "windows_aarch64_gnullvm 0.52.6",
  "windows_aarch64_msvc 0.52.6",
  "windows_i686_gnu 0.52.6",
- "windows_i686_gnullvm",
+ "windows_i686_gnullvm 0.52.6",
  "windows_i686_msvc 0.52.6",
  "windows_x86_64_gnu 0.52.6",
  "windows_x86_64_gnullvm 0.52.6",
  "windows_x86_64_msvc 0.52.6",
 ]
 
+[[package]]
+name = "windows-targets"
+version = "0.53.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c66f69fcc9ce11da9966ddb31a40968cad001c5bedeb5c2b82ede4253ab48aef"
+dependencies = [
+ "windows_aarch64_gnullvm 0.53.0",
+ "windows_aarch64_msvc 0.53.0",
+ "windows_i686_gnu 0.53.0",
+ "windows_i686_gnullvm 0.53.0",
+ "windows_i686_msvc 0.53.0",
+ "windows_x86_64_gnu 0.53.0",
+ "windows_x86_64_gnullvm 0.53.0",
+ "windows_x86_64_msvc 0.53.0",
+]
+
 [[package]]
 name = "windows_aarch64_gnullvm"
 version = "0.48.5"
@@ -689,6 +780,12 @@ version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "32a4622180e7a0ec044bb555404c800bc9fd9ec262ec147edd5989ccd0c02cd3"
 
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.53.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "86b8d5f90ddd19cb4a147a5fa63ca848db3df085e25fee3cc10b39b6eebae764"
+
 [[package]]
 name = "windows_aarch64_msvc"
 version = "0.48.5"
@@ -701,6 +798,12 @@ version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "09ec2a7bb152e2252b53fa7803150007879548bc709c039df7627cabbd05d469"
 
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.53.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c7651a1f62a11b8cbd5e0d42526e55f2c99886c77e007179efff86c2b137e66c"
+
 [[package]]
 name = "windows_i686_gnu"
 version = "0.48.5"
@@ -713,12 +816,24 @@ version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8e9b5ad5ab802e97eb8e295ac6720e509ee4c243f69d781394014ebfe8bbfa0b"
 
+[[package]]
+name = "windows_i686_gnu"
+version = "0.53.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c1dc67659d35f387f5f6c479dc4e28f1d4bb90ddd1a5d3da2e5d97b42d6272c3"
+
 [[package]]
 name = "windows_i686_gnullvm"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0eee52d38c090b3caa76c563b86c3a4bd71ef1a819287c19d586d7334ae8ed66"
 
+[[package]]
+name = "windows_i686_gnullvm"
+version = "0.53.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9ce6ccbdedbf6d6354471319e781c0dfef054c81fbc7cf83f338a4296c0cae11"
+
 [[package]]
 name = "windows_i686_msvc"
 version = "0.48.5"
@@ -731,6 +846,12 @@ version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "240948bc05c5e7c6dabba28bf89d89ffce3e303022809e73deaefe4f6ec56c66"
 
+[[package]]
+name = "windows_i686_msvc"
+version = "0.53.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "581fee95406bb13382d2f65cd4a908ca7b1e4c2f1917f143ba16efe98a589b5d"
+
 [[package]]
 name = "windows_x86_64_gnu"
 version = "0.48.5"
@@ -743,6 +864,12 @@ version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
 
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.53.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2e55b5ac9ea33f2fc1716d1742db15574fd6fc8dadc51caab1c16a3d3b4190ba"
+
 [[package]]
 name = "windows_x86_64_gnullvm"
 version = "0.48.5"
@@ -755,6 +882,12 @@ version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
 
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.53.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0a6e035dd0599267ce1ee132e51c27dd29437f63325753051e71dd9e42406c57"
+
 [[package]]
 name = "windows_x86_64_msvc"
 version = "0.48.5"
@@ -767,6 +900,12 @@ version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
 
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.53.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "271414315aff87387382ec3d271b52d7ae78726f5d44ac98b4f4030c91880486"
+
 [[package]]
 name = "winnow"
 version = "0.7.11"
diff --git a/Cargo.toml b/Cargo.toml
index 1510fa7..1597715 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -23,6 +23,7 @@ thiserror = "2"
 rustc-hash = "2"
 
 [dev-dependencies]
+dirs = "6.0.0"
 rstest = "0.25.0"
 
 [features]
diff --git a/fixtures/global-cache/.gitignore b/fixtures/global-cache/.gitignore
new file mode 100644
index 0000000..5f58b7e
--- /dev/null
+++ b/fixtures/global-cache/.gitignore
@@ -0,0 +1,2 @@
+.yarn/*
+.pnp.*
diff --git a/fixtures/global-cache/.yarnrc.yml b/fixtures/global-cache/.yarnrc.yml
new file mode 100644
index 0000000..956fdce
--- /dev/null
+++ b/fixtures/global-cache/.yarnrc.yml
@@ -0,0 +1,3 @@
+enableGlobalCache: true
+
+nodeLinker: pnp
diff --git a/fixtures/global-cache/package.json b/fixtures/global-cache/package.json
new file mode 100644
index 0000000..1be2eac
--- /dev/null
+++ b/fixtures/global-cache/package.json
@@ -0,0 +1,7 @@
+{
+  "name": "global-cache",
+  "dependencies": {
+    "source-map-support": "^0.5.21"
+  },
+  "packageManager": "yarn@4.9.2"
+}
diff --git a/fixtures/global-cache/test.js b/fixtures/global-cache/test.js
new file mode 100644
index 0000000..1e73bc0
--- /dev/null
+++ b/fixtures/global-cache/test.js
@@ -0,0 +1 @@
+console.log(require.resolve('source-map-support'));
diff --git a/fixtures/global-cache/yarn.lock b/fixtures/global-cache/yarn.lock
new file mode 100644
index 0000000..dd14adb
--- /dev/null
+++ b/fixtures/global-cache/yarn.lock
@@ -0,0 +1,38 @@
+# This file is generated by running "yarn install" inside your project.
+# Manual changes might be lost - proceed with caution!
+
+__metadata:
+  version: 8
+  cacheKey: 10c0
+
+"buffer-from@npm:^1.0.0":
+  version: 1.1.2
+  resolution: "buffer-from@npm:1.1.2"
+  checksum: 10c0/124fff9d66d691a86d3b062eff4663fe437a9d9ee4b47b1b9e97f5a5d14f6d5399345db80f796827be7c95e70a8e765dd404b7c3ff3b3324f98e9b0c8826cc34
+  languageName: node
+  linkType: hard
+
+"global-cache@workspace:.":
+  version: 0.0.0-use.local
+  resolution: "global-cache@workspace:."
+  dependencies:
+    source-map-support: "npm:^0.5.21"
+  languageName: unknown
+  linkType: soft
+
+"source-map-support@npm:^0.5.21":
+  version: 0.5.21
+  resolution: "source-map-support@npm:0.5.21"
+  dependencies:
+    buffer-from: "npm:^1.0.0"
+    source-map: "npm:^0.6.0"
+  checksum: 10c0/9ee09942f415e0f721d6daad3917ec1516af746a8120bba7bb56278707a37f1eb8642bde456e98454b8a885023af81a16e646869975f06afc1a711fb90484e7d
+  languageName: node
+  linkType: hard
+
+"source-map@npm:^0.6.0":
+  version: 0.6.1
+  resolution: "source-map@npm:0.6.1"
+  checksum: 10c0/ab55398007c5e5532957cb0beee2368529618ac0ab372d789806f5718123cc4367d57de3904b4e6a4170eb5a0b0f41373066d02ca0735a0c4d75c7d328d3e011
+  languageName: node
+  linkType: hard
diff --git a/src/lib.rs b/src/lib.rs
index c48fef8..98ad91f 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -157,12 +157,18 @@ pub fn init_pnp_manifest<P: AsRef<Path>>(manifest: &mut Manifest, p: P) {
 
     for (name, ranges) in manifest.package_registry_data.iter_mut() {
         for (reference, info) in ranges.iter_mut() {
+            println!("manifest.manifest_dir, {}", manifest.manifest_dir.to_string_lossy());
+
             let package_location = manifest.manifest_dir.join(info.package_location.clone());
 
             let normalized_location = util::normalize_path(package_location.to_string_lossy());
 
+            println!("normalized_location: {normalized_location}");
+
             info.package_location = PathBuf::from(normalized_location);
 
+            println!("info.package_location: {}", info.package_location.to_string_lossy());
+
             if !info.discard_from_lookup {
                 manifest.location_trie.insert(
                     &info.package_location,
@@ -207,6 +213,12 @@ pub fn find_locator<'a, P: AsRef<Path>>(
         }
     }
 
+    println!("path {}", path.as_ref().to_string_lossy());
+
+    let path = util::normalize_path(path.as_ref().to_string_lossy());
+
+    println!("path {path}");
+
     manifest.location_trie.get_ancestor_value(&path)
 }
 
diff --git a/src/lib_tests.rs b/src/lib_tests.rs
index 44ad700..483d0d5 100644
--- a/src/lib_tests.rs
+++ b/src/lib_tests.rs
@@ -18,12 +18,12 @@ struct TestSuite {
 
 #[cfg(test)]
 mod tests {
-    use std::{fs, path::PathBuf};
+    use std::{env, fs, path::PathBuf};
 
     use super::*;
     use crate::{
         ResolutionConfig, ResolutionHost, init_pnp_manifest, load_pnp_manifest,
-        parse_bare_identifier, resolve_to_unqualified, resolve_to_unqualified_via_manifest,
+        parse_bare_identifier, resolve_to_unqualified, resolve_to_unqualified_via_manifest, util,
     };
 
     #[test]
@@ -163,4 +163,49 @@ mod tests {
         let parsed = parse_bare_identifier("@scope/pkg/a/b/c/index.js");
         assert_eq!(parsed, Ok(("@scope/pkg".to_string(), Some("a/b/c/index.js".to_string()))));
     }
+
+    #[test]
+    fn test_global_cache() {
+        let manifest = load_pnp_manifest(
+            env::current_dir().unwrap().join("fixtures").join("global-cache").join(".pnp.cjs"),
+        )
+        .unwrap();
+
+        let home_dir = dirs::home_dir().unwrap();
+
+        #[cfg(windows)]
+        let global_cache = home_dir.join("AppData\\Local\\Yarn\\Berry\\cache");
+        #[cfg(not(windows))]
+        let global_cache = home_dir.join(".yarn/berry/cache");
+
+        let result = resolve_to_unqualified_via_manifest(
+            &manifest,
+            "source-map",
+            global_cache
+                .join("source-map-support-npm-0.5.21-09ca99e250-10c0.zip")
+                .join("node_modules")
+                .join("source-map-support")
+                .join(""),
+        );
+
+        match result {
+            Ok(Resolution::Resolved(path, subpath)) => {
+                assert_eq!(
+                    path.to_string_lossy(),
+                    util::normalize_path(
+                        global_cache
+                            .join("source-map-npm-0.6.1-1a3621db16-10c0.zip")
+                            .join("node_modules")
+                            .join("source-map")
+                            .join("")
+                            .to_string_lossy()
+                    )
+                );
+                assert_eq!(subpath, None);
+            }
+            _ => {
+                panic!("Unexpected resolve failed");
+            }
+        }
+    }
 }
diff --git a/src/util.rs b/src/util.rs
index ec9a7b9..cc5f3a5 100644
--- a/src/util.rs
+++ b/src/util.rs
@@ -3,7 +3,7 @@ use serde::{Deserialize, Deserializer, de::Error};
 use std::borrow::Cow;
 
 use path_slash::PathBufExt;
-use std::path::{Path, PathBuf};
+use std::path::{MAIN_SEPARATOR_STR, Path, PathBuf};
 
 #[derive(Debug, Default, Clone)]
 pub struct Trie<T> {
@@ -39,7 +39,9 @@ pub fn normalize_path<P: AsRef<str>>(original: P) -> String {
     let p = PathBuf::from(original_str);
     let mut str = clean_path::clean(p).to_slash_lossy().to_string();
 
-    if original_str.ends_with('/') && !str.ends_with('/') {
+    if (original_str.ends_with('/') || original_str.ends_with(MAIN_SEPARATOR_STR))
+        && !str.ends_with('/')
+    {
         str.push('/');
     }