diff --git a/docs/source/conf.py b/docs/source/conf.py
index f84a167..fe57894 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -25,8 +25,8 @@
 author = 'HED Working Group'
 
 # The full version, including alpha/beta/rc tags
-release = '3.1.0'
-version = '3.1.0'
+release = '3.1.1'
+version = '3.1.1'
 
 currentdir = os.path.abspath(os.path.dirname(__file__))
 
diff --git a/docs/source/index.rst b/docs/source/index.rst
index f53ee0d..42052d2 100644
--- a/docs/source/index.rst
+++ b/docs/source/index.rst
@@ -7,7 +7,7 @@ HED specification
 
 .. sidebar:: **Links**
 
-   * `PDF released version (V3.1.0) <https://raw.githubusercontent.com/hed-standard/hed-specification/master/hedspec/HEDSpecification_3_1_0.pdf>`_
+   * `PDF released version (V3.1.1) <https://raw.githubusercontent.com/hed-standard/hed-specification/master/hedspec/HEDSpecification_3_1_1.pdf>`_
 
    * `PDF working version <https://hed-specification.readthedocs.io/_/downloads/en/latest/pdf/>`_
 
diff --git a/hedspec/HEDSpecification_3_1_1.pdf b/hedspec/HEDSpecification_3_1_1.pdf
new file mode 100644
index 0000000..d7d4b46
Binary files /dev/null and b/hedspec/HEDSpecification_3_1_1.pdf differ