diff --git a/instrumentation/opentelemetry-instrumentation-flask/CHANGELOG.md b/instrumentation/opentelemetry-instrumentation-flask/CHANGELOG.md
index bfc326923..a4641e55b 100644
--- a/instrumentation/opentelemetry-instrumentation-flask/CHANGELOG.md
+++ b/instrumentation/opentelemetry-instrumentation-flask/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+## Version 0.13b0
+
+Released 2020-09-17
+
 - Drop support for Python 3.4
   ([#1099](https://github.com/open-telemetry/opentelemetry-python/pull/1099))
 
diff --git a/instrumentation/opentelemetry-instrumentation-flask/setup.cfg b/instrumentation/opentelemetry-instrumentation-flask/setup.cfg
index a8c28f4dd..7acef4432 100644
--- a/instrumentation/opentelemetry-instrumentation-flask/setup.cfg
+++ b/instrumentation/opentelemetry-instrumentation-flask/setup.cfg
@@ -40,14 +40,14 @@ package_dir=
 packages=find_namespace:
 install_requires =
     flask ~= 1.0
-    opentelemetry-instrumentation-wsgi == 0.13dev0
-    opentelemetry-instrumentation == 0.13dev0
-    opentelemetry-api == 0.13dev0
+    opentelemetry-instrumentation-wsgi == 0.13b0
+    opentelemetry-instrumentation == 0.13b0
+    opentelemetry-api == 0.13b0
 
 [options.extras_require]
 test =
     flask~=1.0
-    opentelemetry-test == 0.13dev0
+    opentelemetry-test == 0.13b0
 
 [options.packages.find]
 where = src
diff --git a/instrumentation/opentelemetry-instrumentation-flask/src/opentelemetry/instrumentation/flask/version.py b/instrumentation/opentelemetry-instrumentation-flask/src/opentelemetry/instrumentation/flask/version.py
index 9cc445d09..2015e87c7 100644
--- a/instrumentation/opentelemetry-instrumentation-flask/src/opentelemetry/instrumentation/flask/version.py
+++ b/instrumentation/opentelemetry-instrumentation-flask/src/opentelemetry/instrumentation/flask/version.py
@@ -12,4 +12,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version__ = "0.13dev0"
+__version__ = "0.13b0"