diff --git a/Makefile b/Makefile
index 9c423a0e5f..4024410bc8 100644
--- a/Makefile
+++ b/Makefile
@@ -52,7 +52,7 @@ KIND_CONFIG ?= kind-$(KUBE_VERSION).yaml
 
 OPERATOR_SDK_VERSION ?= 1.17.0
 
-CERTMANAGER_VERSION ?= 1.6.1
+CERTMANAGER_VERSION ?= 1.8.0
 
 ifndef ignore-not-found
   ignore-not-found = false
diff --git a/README.md b/README.md
index a404b2f32d..d9b36636d7 100644
--- a/README.md
+++ b/README.md
@@ -297,27 +297,27 @@ The OpenTelemetry Operator *might* work on versions outside of the given range,
 
 | OpenTelemetry Operator | Kubernetes           | Cert-Manager         |
 |------------------------|----------------------|----------------------|
-| v0.51.0                | v1.19 to v1.23       | 1.6.1                |
-| v0.50.0                | v1.19 to v1.23       | 1.6.1                |
-| v0.49.0                | v1.19 to v1.23       | 1.6.1                |
-| v0.48.0                | v1.19 to v1.23       | 1.6.1                |
-| v0.47.0                | v1.19 to v1.23       | 1.6.1                |
-| v0.46.0                | v1.19 to v1.23       | 1.6.1                |
-| v0.45.0                | v1.21 to v1.23       | 1.6.1                |
-| v0.44.0                | v1.21 to v1.23       | 1.6.1                |
-| v0.43.0                | v1.21 to v1.23       | 1.6.1                |
-| v0.42.0                | v1.21 to v1.23       | 1.6.1                |
-| v0.41.1                | v1.21 to v1.23       | 1.6.1                |
-| v0.41.0                | v1.20 to v1.22       | 1.6.1                |
-| v0.40.0                | v1.20 to v1.22       | 1.6.1                |
-| v0.39.0                | v1.20 to v1.22       | 1.6.1                |
-| v0.38.0                | v1.20 to v1.22       | 1.6.1                |
-| v0.37.1                | v1.20 to v1.22       | v1.4.0 to v1.6.1     |
-| v0.37.0                | v1.20 to v1.22       | v1.4.0 to v1.5.4     |
-| v0.36.0                | v1.20 to v1.22       | v1.4.0 to v1.5.4     |
-| v0.35.0                | v1.20 to v1.22       | v1.4.0 to v1.5.4     |
-| v0.34.0                | v1.20 to v1.22       | v1.4.0 to v1.5.4     |
-| v0.33.0                | v1.20 to v1.22       | v1.4.0 to v1.5.4     |
+| v0.51.0                | v1.19 to v1.23       | v1alpha2             |
+| v0.50.0                | v1.19 to v1.23       | v1alpha2             |
+| v0.49.0                | v1.19 to v1.23       | v1alpha2             |
+| v0.48.0                | v1.19 to v1.23       | v1alpha2             |
+| v0.47.0                | v1.19 to v1.23       | v1alpha2             |
+| v0.46.0                | v1.19 to v1.23       | v1alpha2             |
+| v0.45.0                | v1.21 to v1.23       | v1alpha2             |
+| v0.44.0                | v1.21 to v1.23       | v1alpha2             |
+| v0.43.0                | v1.21 to v1.23       | v1alpha2             |
+| v0.42.0                | v1.21 to v1.23       | v1alpha2             |
+| v0.41.1                | v1.21 to v1.23       | v1alpha2             |
+| v0.41.0                | v1.20 to v1.22       | v1alpha2             |
+| v0.40.0                | v1.20 to v1.22       | v1alpha2             |
+| v0.39.0                | v1.20 to v1.22       | v1alpha2             |
+| v0.38.0                | v1.20 to v1.22       | v1alpha2             |
+| v0.37.1                | v1.20 to v1.22       | v1alpha2             |
+| v0.37.0                | v1.20 to v1.22       | v1alpha2             |
+| v0.36.0                | v1.20 to v1.22       | v1alpha2             |
+| v0.35.0                | v1.20 to v1.22       | v1alpha2             |
+| v0.34.0                | v1.20 to v1.22       | v1alpha2             |
+| v0.33.0                | v1.20 to v1.22       | v1alpha2             |
 
 ## Contributing and Developing