diff --git a/recipe/meta.yaml b/recipe/meta.yaml
index b5a3e5b..20759ca 100644
--- a/recipe/meta.yaml
+++ b/recipe/meta.yaml
@@ -10,7 +10,7 @@ source:
   sha256: {{ checksum }}
 
 build:
-  number: 0
+  number: 1
   # These are present when the new environment is created
   # so we have to exempt them from the list of initial files
   # for conda-build to realize they should be included.
@@ -33,7 +33,7 @@ requirements:
     - futures >=3.0.0              # [py<34]
     - menuinst >=1.4.11,<2         # [win]
     - pip
-    - ruamel_yaml >=0.11.14,<0.16
+    - ruamel.yaml >=0.11.14,<0.16
     - setuptools >=31.0.1
   run:
     - python
@@ -43,7 +43,7 @@ requirements:
     - pycosat >=0.6.3
     - pyopenssl >=16.2.0
     - requests >=2.18.4,<3
-    - ruamel_yaml >=0.11.14,<0.16
+    - ruamel.yaml >=0.11.14,<0.16
     - setuptools >=31.0.1
   run_constrained:
     - conda-build >=3