diff --git a/CHANGELOG.org b/CHANGELOG.org
index 5024cbe..2883fa8 100644
--- a/CHANGELOG.org
+++ b/CHANGELOG.org
@@ -1,4 +1,10 @@
-* v3.5
+* Unreleased
+
+- Implement ~rustic-cargo-populate-package-name~ customization
+  option. This is handy when you are working on multiple
+  projects. Refer the variable docs and README for more details.
+
+* 3.5
 
 - Revamp testing in CI: Use only cask.
 - Replace Makefile with justfile.
diff --git a/README.md b/README.md
index cfb27b7..84164b9 100644
--- a/README.md
+++ b/README.md
@@ -529,6 +529,7 @@ Customization:
 - `rustic-cargo-auto-add-missing-dependencies` automatically add missing dependencies
 to Cargo.toml by checking new diagnostics for 'unresolved import' errors
 - `rustic-cargo-use-last-stored-arguments` always use stored arguments that were provided with `C-u`(instead of requiring to run rustic "rerun" commands)
+- `rustic-cargo-populate-package-name` for auto populating the correct package name when used with universal argument. This comes in handy when you are working with multiple projects. Not enabled by default, but recommened to enable it.
 
 ### Edit
 
diff --git a/rustic-cargo.el b/rustic-cargo.el
index c3b9b83..de3716f 100644
--- a/rustic-cargo.el
+++ b/rustic-cargo.el
@@ -49,6 +49,40 @@
   :type 'string
   :group 'rustic-cargo)
 
+(defcustom rustic-cargo-populate-package-name nil
+  "Populate package name automatically when used with universal argument."
+  :type 'boolean
+  :group 'rustic-cargo)
+
+(defvar rustic--package-names (make-hash-table :test #'equal))
+
+(defun rustic-cargo-cached-package-name ()
+  (let ((package-name (gethash default-directory rustic--package-names)))
+    (if package-name
+        package-name
+      (progn
+        (let ((pkg-name (rustic-cargo-package-name)))
+          (setf (gethash default-directory rustic--package-names) pkg-name))
+        (gethash default-directory rustic--package-names)))))
+
+(defun rustic-cargo-package-argument ()
+  (if rustic-cargo-populate-package-name
+      (let ((package-name (rustic-cargo-cached-package-name)))
+        (when package-name
+          (format "--package %s" package-name)))))
+
+(defun rustic-cargo-package-name ()
+  (let ((buffer (get-buffer "*cargo-manifest*")))
+    (if buffer
+        (kill-buffer buffer)))
+  (let* ((buffer (get-buffer-create "*cargo-manifest*"))
+         (exit-code (call-process (rustic-cargo-bin) nil buffer nil "read-manifest")))
+    (if (eq exit-code 0)
+        (with-current-buffer buffer
+          (let ((json-parsed-data (json-read-from-string (buffer-string))))
+            (cdr (assoc 'name json-parsed-data))))
+      nil)))
+
 (defun rustic-cargo-bin ()
   (if (file-remote-p (or (buffer-file-name) ""))
       rustic-cargo-bin-remote
@@ -186,7 +220,8 @@ If ARG is not nil, use value as argument and store it in
     (setq rustic-test-arguments
           (read-from-minibuffer "Cargo test arguments: "
                                 (rustic--populate-minibuffer
-                                 (list rustic-test-arguments
+                                 (list (rustic-cargo-package-argument)
+                                       rustic-test-arguments
                                        rustic-cargo-build-arguments
                                        rustic-default-test-arguments)))))
   (rustic-cargo-test-run rustic-test-arguments))
@@ -685,7 +720,7 @@ in your project like `pwd'"
   (interactive "P")
   (when arg
     (setq rustic-cargo-build-arguments
-          (read-string "Cargo build arguments: " (rustic--populate-minibuffer (list rustic-cargo-build-arguments)))))
+          (read-string "Cargo build arguments: " (rustic--populate-minibuffer (list (rustic-cargo-package-argument) rustic-cargo-build-arguments)))))
   (rustic-run-cargo-command `(,(rustic-cargo-bin)
                               ,rustic-cargo-build-exec-command
                               ,@(split-string rustic-cargo-build-arguments))
diff --git a/rustic-clippy.el b/rustic-clippy.el
index 67ccd75..8ddc12a 100644
--- a/rustic-clippy.el
+++ b/rustic-clippy.el
@@ -84,6 +84,7 @@ When calling this function from `rustic-popup-mode', always use the value of
                         (read-from-minibuffer "Cargo clippy arguments: "
                                               (rustic--populate-minibuffer
                                                (list
+                                                (rustic-cargo-package-argument)
                                                 rustic-clippy-arguments
                                                 rustic-cargo-build-arguments
                                                 rustic-default-clippy-arguments