diff --git a/crates/moon/tests/cmd_test.rs b/crates/moon/tests/cmd_test.rs
index 7b1f7c84..b282e600 100644
--- a/crates/moon/tests/cmd_test.rs
+++ b/crates/moon/tests/cmd_test.rs
@@ -123,6 +123,7 @@ fn cmd_test() {
             ${WORK_DIR}/moon_info_001.in/moon.test, ok,
             ${WORK_DIR}/moon_info_002.in/moon.test, ok,
             ${WORK_DIR}/specify_source_dir_001.in/moon.test, ok,
+            ${WORK_DIR}/test_dot_source.in/moon.test, ok,
             ${WORK_DIR}/test_exclude_001.in/moon.test, ok,
             ${WORK_DIR}/test_exclude_002.in/moon.test, ok,
             ${WORK_DIR}/test_include_001.in/moon.test, ok,
diff --git a/crates/moon/tests/test_cases/test_dot_source.in/.gitignore b/crates/moon/tests/test_cases/test_dot_source.in/.gitignore
new file mode 100644
index 00000000..b1283a74
--- /dev/null
+++ b/crates/moon/tests/test_cases/test_dot_source.in/.gitignore
@@ -0,0 +1,2 @@
+target/
+.mooncakes/
diff --git a/crates/moon/tests/test_cases/test_dot_source.in/README.md b/crates/moon/tests/test_cases/test_dot_source.in/README.md
new file mode 100644
index 00000000..ae00983f
--- /dev/null
+++ b/crates/moon/tests/test_cases/test_dot_source.in/README.md
@@ -0,0 +1 @@
+# username/hello
\ No newline at end of file
diff --git a/crates/moon/tests/test_cases/test_dot_source.in/lib/hello.mbt b/crates/moon/tests/test_cases/test_dot_source.in/lib/hello.mbt
new file mode 100644
index 00000000..9012592a
--- /dev/null
+++ b/crates/moon/tests/test_cases/test_dot_source.in/lib/hello.mbt
@@ -0,0 +1,3 @@
+pub fn hello() -> String {
+  "Hello, world!"
+}
diff --git a/crates/moon/tests/test_cases/test_dot_source.in/lib/hello_test.mbt b/crates/moon/tests/test_cases/test_dot_source.in/lib/hello_test.mbt
new file mode 100644
index 00000000..e0e3a7d1
--- /dev/null
+++ b/crates/moon/tests/test_cases/test_dot_source.in/lib/hello_test.mbt
@@ -0,0 +1,5 @@
+test "hello" {
+  if @lib.hello() != "Hello, world!" {
+    fail!("@lib.hello() != \"Hello, world!\"")
+  }
+}
diff --git a/crates/moon/tests/test_cases/test_dot_source.in/lib/moon.pkg.json b/crates/moon/tests/test_cases/test_dot_source.in/lib/moon.pkg.json
new file mode 100644
index 00000000..9e26dfee
--- /dev/null
+++ b/crates/moon/tests/test_cases/test_dot_source.in/lib/moon.pkg.json
@@ -0,0 +1 @@
+{}
\ No newline at end of file
diff --git a/crates/moon/tests/test_cases/test_dot_source.in/main/main.mbt b/crates/moon/tests/test_cases/test_dot_source.in/main/main.mbt
new file mode 100644
index 00000000..d25cb935
--- /dev/null
+++ b/crates/moon/tests/test_cases/test_dot_source.in/main/main.mbt
@@ -0,0 +1,3 @@
+fn main {
+  println(@lib.hello())
+}
diff --git a/crates/moon/tests/test_cases/test_dot_source.in/main/moon.pkg.json b/crates/moon/tests/test_cases/test_dot_source.in/main/moon.pkg.json
new file mode 100644
index 00000000..48783525
--- /dev/null
+++ b/crates/moon/tests/test_cases/test_dot_source.in/main/moon.pkg.json
@@ -0,0 +1,6 @@
+{
+  "is-main": true,
+  "import": [
+    "username/hello/lib"
+  ]
+}
\ No newline at end of file
diff --git a/crates/moon/tests/test_cases/test_dot_source.in/moon.mod.json b/crates/moon/tests/test_cases/test_dot_source.in/moon.mod.json
new file mode 100644
index 00000000..5a3a8239
--- /dev/null
+++ b/crates/moon/tests/test_cases/test_dot_source.in/moon.mod.json
@@ -0,0 +1,10 @@
+{
+  "name": "username/hello",
+  "version": "0.1.0",
+  "readme": "README.md",
+  "repository": "",
+  "license": "",
+  "keywords": [],
+  "description": "",
+  "source": "."
+}
\ No newline at end of file
diff --git a/crates/moon/tests/test_cases/test_dot_source.in/moon.test b/crates/moon/tests/test_cases/test_dot_source.in/moon.test
new file mode 100644
index 00000000..67509ca0
--- /dev/null
+++ b/crates/moon/tests/test_cases/test_dot_source.in/moon.test
@@ -0,0 +1,5 @@
+  $ moon check --dry-run --sort-input
+  moonc check ./lib/hello.mbt -o ./target/wasm-gc/release/check/lib/lib.mi -pkg username/hello/lib -std-path $MOON_HOME/lib/core/target/wasm-gc/release/bundle -pkg-sources username/hello/lib:./lib -target wasm-gc
+  moonc check ./main/main.mbt -o ./target/wasm-gc/release/check/main/main.mi -pkg username/hello/main -is-main -std-path $MOON_HOME/lib/core/target/wasm-gc/release/bundle -i ./target/wasm-gc/release/check/lib/lib.mi:lib -pkg-sources username/hello/main:./main -target wasm-gc
+  moonc check ./lib/hello_test.mbt -o ./target/wasm-gc/release/check/lib/lib.blackbox_test.mi -pkg username/hello/lib_blackbox_test -std-path $MOON_HOME/lib/core/target/wasm-gc/release/bundle -i ./target/wasm-gc/release/check/lib/lib.mi:lib -pkg-sources username/hello/lib_blackbox_test:./lib -target wasm-gc
+  
diff --git a/crates/moonutil/src/scan.rs b/crates/moonutil/src/scan.rs
index 57151119..a4dfc735 100644
--- a/crates/moonutil/src/scan.rs
+++ b/crates/moonutil/src/scan.rs
@@ -144,7 +144,7 @@ fn scan_module_packages(
     let mod_desc = read_module_desc_file_in_dir(module_source_dir)?;
     let module_source_dir = match &mod_desc.source {
         None => module_source_dir.to_path_buf(),
-        Some(p) => module_source_dir.join(p),
+        Some(p) => dunce::canonicalize(module_source_dir.join(p))?,
     };
 
     let mut packages: IndexMap<String, Package> = IndexMap::new();