diff --git a/MANIFEST.in b/MANIFEST.in
index da2820cdc..7c96ba026 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -10,3 +10,4 @@ include ot/lp/full_bipartitegraph.h
 include ot/lp/full_bipartitegraph_omp.h
 include ot/lp/network_simplex_simple.h
 include ot/lp/network_simplex_simple_omp.h
+include ot/partial/partial_cython.pyx
diff --git a/RELEASES.md b/RELEASES.md
index e76fd575a..ccb9b97d2 100644
--- a/RELEASES.md
+++ b/RELEASES.md
@@ -1,5 +1,12 @@
 # Releases
 
+## 0.9.6.post1
+
+*September 2025*
+
+#### Closed issues
+- Fix missing cython file in MANIFEST.in (PR #763)
+
 ## 0.9.6
 
 *September 2025*
diff --git a/ot/__init__.py b/ot/__init__.py
index 625d2aa27..235fb91b4 100644
--- a/ot/__init__.py
+++ b/ot/__init__.py
@@ -77,7 +77,7 @@
 # utils functions
 from .utils import dist, unif, tic, toc, toq
 
-__version__ = "0.9.6"
+__version__ = "0.9.6.post1"
 
 __all__ = [
     "emd",