diff --git a/README.md b/README.md
index 0bea15087..2c46b8f00 100644
--- a/README.md
+++ b/README.md
@@ -103,27 +103,27 @@ Benefits include:
 ### Platinum Sponsor:
 <div align="center">
    <a href="https://hudsonthames.org/sponsors/">
-   <img src="https://raw.githubusercontent.com/hudson-and-thames/mlfinlab/master/docs/source/logo/machine-factor-technologies.png" height="200"><br>
+   <img src="https://raw.githubusercontent.com/hudson-and-thames/mlfinlab/master/docs/source/logo/plat_sponsors.png" height="200"><br>
 </div>
 
 
 * [Machine Factor Technologies](https://machinefactor.tech/)
+* [alis_](https://alis.capital/)
 
 ### Gold Sponsors:
 <div align="center">
    <a href="https://hudsonthames.org/sponsors/">
    <img src="https://raw.githubusercontent.com/hudson-and-thames/mlfinlab/master/docs/source/logo/gold_sponsors.png" height="200"><br>
 </div>
-<div align="center">
-   <a href="https://hudsonthames.org/sponsors/">
-   <img src="https://raw.githubusercontent.com/hudson-and-thames/mlfinlab/master/docs/source/logo/ali_saif.jpg" height="200"><br>
-</div>
+
 
 * [E.P. Chan & Associates](https://www.epchan.com/)
+* [PolarStar](https://www.polarstarfunds.com/)
 * [Markov Capital](http://www.markovcapital.se/)
 * [Consilium Crypto](https://consiliumcrypto.ai)
 * [3Jane Capital](https://3jane.com/)
 * [Ali Saif](https://www.linkedin.com/in/ali-saif/)
+* [Ace Capital](https://acecapitalinvestments.com/)
 
 ---
 
diff --git a/docs/source/index.rst b/docs/source/index.rst
index 53fa0dbc3..3d4826563 100644
--- a/docs/source/index.rst
+++ b/docs/source/index.rst
@@ -143,12 +143,12 @@ Benefits include:
 Platinum Sponsor:
 *****************
 
-.. figure:: logo/machine-factor-technologies.png
+.. figure:: logo/plat_sponsors.png
    :scale: 100 %
    :align: center
    :figclass: align-center
    :alt: Platinum Sponsors
-   :target: https://machinefactor.tech/
+   :target: https://hudsonthames.org/sponsors/
 
 Gold Sponsors:
 **************
@@ -160,13 +160,6 @@ Gold Sponsors:
    :alt: Gold Sponsors
    :target: https://hudsonthames.org/sponsors/
 
-.. figure:: logo/ali_saif.jpg
-   :scale: 100 %
-   :align: center
-   :figclass: align-center
-   :alt: Gold Sponsors
-   :target: https://hudsonthames.org/sponsors/
-
 Contact us
 ##########
 
diff --git a/docs/source/logo/gold_sponsors.png b/docs/source/logo/gold_sponsors.png
index c5e7dc22e..d396de988 100644
Binary files a/docs/source/logo/gold_sponsors.png and b/docs/source/logo/gold_sponsors.png differ
diff --git a/docs/source/logo/plat_sponsors.png b/docs/source/logo/plat_sponsors.png
new file mode 100644
index 000000000..ae2362cfb
Binary files /dev/null and b/docs/source/logo/plat_sponsors.png differ