diff --git a/CHANGES.md b/CHANGES.md
index e1f88456..efc76e5d 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,5 +1,9 @@
 # Release History
 
+## 0.21.3 (2024-mm-dd)
+
+- INSTALL: Remove `pystac[validation]` (as it is an optional dependency) from setup.py, and create a `stac` extra feature.
+
 ## 0.21.2 (2024-07-30)
 
 - ENH: `to_str` and `to_band`: add a `as_list` argument defaulting to `True`. When set as False, return a str from `to_str` and a band from `to_band` ([#138](https://github.com/sertit/eoreader/issues/138)). Thanks @jsetty!
@@ -8,7 +12,6 @@
 - FIX: Fix `Maxar` product with `QB02` satellite ID ([#140](https://github.com/sertit/eoreader/issues/140))
 - FIX: Fix issue with geocoding with unzipped `Sentinel-3 OLCI` product ([#137](https://github.com/sertit/eoreader/issues/137))
 - FIX: Fix iceye product when extent file (*.kml) not found ([#135](https://github.com/sertit/eoreader/pull/135))
-- FIX: Add missing `pystac[validation]` in setup.py
 - FIX: Handle RCM and RS2 products that doesn't bundle their extent in a KML file ([#155](https://github.com/sertit/eoreader/issues/155))
 - FIX: Fix error in looking for bands in Sentinel-2 L1C archived products ([#168](https://github.com/sertit/eoreader/issues/168))
 - FIX: Handle wrongly recognized Planet products because of the recursive nested mtd in the Reader ([#169](https://github.com/sertit/eoreader/issues/169))
diff --git a/setup.py b/setup.py
index 4102eabc..d2d8141f 100644
--- a/setup.py
+++ b/setup.py
@@ -41,8 +41,14 @@
         "validators",
         "methodtools",
         "dicttoxml",
-        "pystac[validation]",
     ],
+    extras_require={
+        "stac": [
+            "pystac[validation]",
+            "stac-asset",
+            "planetary_computer",
+        ]
+    },
     classifiers=[
         "Development Status :: 5 - Production/Stable",
         "Intended Audience :: Developers",