diff --git a/README.md b/README.md
index 4c605da..24520e2 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,7 @@ Make sure `pip install flit twine` so you can build and deploy to PyPI.
 4. A github action will build and push the repository on committing a tagged version
 
 ### Version History
+* __v3.1.1__ - Fix ES Provider to send None as last page pagination token
 * __v3.1.0__ - Add new ProviderException classes to pass more meaningful errors to consumer processes
 * __v3.0.1__ - Fix ES Provider to accept sort_{order,field} paging arguments like NSA-based Provider
 * __v3.0.0__ - New "OnlineNewsMediaCloudProvider" using Elasticsearch DSL for direct access to the ES cluster. Retain old provider as "OnlineNewsMediaCloudOldProvider" for now. 
diff --git a/pyproject.toml b/pyproject.toml
index ce7fa3d..e9bda08 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "flit_core.buildapi"
 
 [project]
 name = "mc-providers"
-version = "3.1.0"
+version = "3.1.1"
 authors = [
     {name = "Paige Gulley", email = "nano3.14@gmail.com"},
     {name = "Rahul Bhargava", email = "r.bhargava@northeastern.edu"},