diff --git a/python_modules/dagit/dagit/version.py b/python_modules/dagit/dagit/version.py
index 234da0a753358..c397ce73b0d4b 100644
--- a/python_modules/dagit/dagit/version.py
+++ b/python_modules/dagit/dagit/version.py
@@ -1,3 +1,3 @@
-__version__ = '0.4.0rc2'
+__version__ = '0.4.0'
 
-__nightly__ = '20190417'
+__nightly__ = '20190418'
diff --git a/python_modules/dagster-airflow/dagster_airflow/version.py b/python_modules/dagster-airflow/dagster_airflow/version.py
index 234da0a753358..c397ce73b0d4b 100644
--- a/python_modules/dagster-airflow/dagster_airflow/version.py
+++ b/python_modules/dagster-airflow/dagster_airflow/version.py
@@ -1,3 +1,3 @@
-__version__ = '0.4.0rc2'
+__version__ = '0.4.0'
 
-__nightly__ = '20190417'
+__nightly__ = '20190418'
diff --git a/python_modules/dagster-graphql/dagster_graphql/version.py b/python_modules/dagster-graphql/dagster_graphql/version.py
index 234da0a753358..c397ce73b0d4b 100644
--- a/python_modules/dagster-graphql/dagster_graphql/version.py
+++ b/python_modules/dagster-graphql/dagster_graphql/version.py
@@ -1,3 +1,3 @@
-__version__ = '0.4.0rc2'
+__version__ = '0.4.0'
 
-__nightly__ = '20190417'
+__nightly__ = '20190418'
diff --git a/python_modules/dagster/dagster/version.py b/python_modules/dagster/dagster/version.py
index 234da0a753358..c397ce73b0d4b 100644
--- a/python_modules/dagster/dagster/version.py
+++ b/python_modules/dagster/dagster/version.py
@@ -1,3 +1,3 @@
-__version__ = '0.4.0rc2'
+__version__ = '0.4.0'
 
-__nightly__ = '20190417'
+__nightly__ = '20190418'
diff --git a/python_modules/dagstermill/dagstermill/version.py b/python_modules/dagstermill/dagstermill/version.py
index 234da0a753358..c397ce73b0d4b 100644
--- a/python_modules/dagstermill/dagstermill/version.py
+++ b/python_modules/dagstermill/dagstermill/version.py
@@ -1,3 +1,3 @@
-__version__ = '0.4.0rc2'
+__version__ = '0.4.0'
 
-__nightly__ = '20190417'
+__nightly__ = '20190418'
diff --git a/python_modules/libraries/dagster-aws/dagster_aws/version.py b/python_modules/libraries/dagster-aws/dagster_aws/version.py
index 234da0a753358..c397ce73b0d4b 100644
--- a/python_modules/libraries/dagster-aws/dagster_aws/version.py
+++ b/python_modules/libraries/dagster-aws/dagster_aws/version.py
@@ -1,3 +1,3 @@
-__version__ = '0.4.0rc2'
+__version__ = '0.4.0'
 
-__nightly__ = '20190417'
+__nightly__ = '20190418'
diff --git a/python_modules/libraries/dagster-ge/dagster_ge/version.py b/python_modules/libraries/dagster-ge/dagster_ge/version.py
index 234da0a753358..c397ce73b0d4b 100644
--- a/python_modules/libraries/dagster-ge/dagster_ge/version.py
+++ b/python_modules/libraries/dagster-ge/dagster_ge/version.py
@@ -1,3 +1,3 @@
-__version__ = '0.4.0rc2'
+__version__ = '0.4.0'
 
-__nightly__ = '20190417'
+__nightly__ = '20190418'
diff --git a/python_modules/libraries/dagster-pandas/dagster_pandas/version.py b/python_modules/libraries/dagster-pandas/dagster_pandas/version.py
index 234da0a753358..c397ce73b0d4b 100644
--- a/python_modules/libraries/dagster-pandas/dagster_pandas/version.py
+++ b/python_modules/libraries/dagster-pandas/dagster_pandas/version.py
@@ -1,3 +1,3 @@
-__version__ = '0.4.0rc2'
+__version__ = '0.4.0'
 
-__nightly__ = '20190417'
+__nightly__ = '20190418'
diff --git a/python_modules/libraries/dagster-snowflake/dagster_snowflake/version.py b/python_modules/libraries/dagster-snowflake/dagster_snowflake/version.py
index 234da0a753358..c397ce73b0d4b 100644
--- a/python_modules/libraries/dagster-snowflake/dagster_snowflake/version.py
+++ b/python_modules/libraries/dagster-snowflake/dagster_snowflake/version.py
@@ -1,3 +1,3 @@
-__version__ = '0.4.0rc2'
+__version__ = '0.4.0'
 
-__nightly__ = '20190417'
+__nightly__ = '20190418'
diff --git a/python_modules/libraries/dagster-spark/dagster_spark/version.py b/python_modules/libraries/dagster-spark/dagster_spark/version.py
index 234da0a753358..c397ce73b0d4b 100644
--- a/python_modules/libraries/dagster-spark/dagster_spark/version.py
+++ b/python_modules/libraries/dagster-spark/dagster_spark/version.py
@@ -1,3 +1,3 @@
-__version__ = '0.4.0rc2'
+__version__ = '0.4.0'
 
-__nightly__ = '20190417'
+__nightly__ = '20190418'