diff --git a/README.md b/README.md
index f75de1b63..e98907ee6 100644
--- a/README.md
+++ b/README.md
@@ -83,13 +83,14 @@ supported versions of Kubernetes clusters.
 
 #### Compatibility matrix
 
-|                    | Kubernetes 1.4 | Kubernetes 1.5 | Kubernetes 1.6 | Kubernetes 1.7 | Kubernetes 1.8 |
-|--------------------|----------------|----------------|----------------|----------------|----------------|
-| client-python 1.0  | +              | ✓              | -              | -              |-               |
-| client-python 2.0  | +              | +              | ✓              | -              |-               |
-| client-python 3.0  | +              | +              | +              | ✓              |-               |
-| client-python 4.0  | +              | +              | +              | +              |✓               |
-| client-python HEAD | +              | +              | +              | +              |✓               |
+|                    | Kubernetes 1.4 | Kubernetes 1.5 | Kubernetes 1.6 | Kubernetes 1.7 | Kubernetes 1.8 | Kubernetes 1.9 |
+|--------------------|----------------|----------------|----------------|----------------|----------------|----------------|
+| client-python 1.0  | +              | ✓              | -              | -              |-               |-               |
+| client-python 2.0  | +              | +              | ✓              | -              |-               |-               |
+| client-python 3.0  | +              | +              | +              | ✓              |-               |-               |
+| client-python 4.0  | +              | +              | +              | +              |✓               |-               |
+| client-python 5.0  | +              | +              | +              | +              |+               |✓               |
+| client-python HEAD | +              | +              | +              | +              |+               |✓               |
 
 Key:
 
@@ -113,6 +114,7 @@ between client-python versions.
 | 3.0            | Kubernetes main repo, 1.7 branch     | ✓                             |
 | 4.0 Alpha/Beta | Kubernetes main repo, 1.8 branch     | ✗                             |
 | 4.0            | Kubernetes main repo, 1.8 branch     | ✓                             |
+| 5.0 Alpha/Beta | Kubernetes main repo, 1.9 branch     | ✓                             |
 
 
 Key: