diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index 82737b5..93e4df1 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 1.6.17
+current_version = 1.6.18
 parse = (?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)
 serialize = 
 	{major}.{minor}.{patch}
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index c811197..943c65f 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -27,7 +27,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        python-version: ['3.8', '3.9', '3.10', '3.11', '3.12']
+        python-version: ['3.9', '3.10', '3.11', '3.12']
         os: [ubuntu-latest, windows-latest, macos-latest]
 
     runs-on: ${{ matrix.os }}
diff --git a/README.md b/README.md
index a5010f8..f102789 100644
--- a/README.md
+++ b/README.md
@@ -50,7 +50,7 @@ pip install dt-cli
    1. Generate developer key and certificate from the CA
 
       ```shell
-      $ dt ext generate-developer-pem --ca-crt ca.crt --ca-key ca.key -o dev.pem
+      $ dt ext generate-developer-pem --ca-crt ca.pem --ca-key ca.key -o dev.pem
       Name: Ext
       Loading CA private key ca.key
       Loading CA certificate ca.pem
diff --git a/dtcli/scripts/dt.py b/dtcli/scripts/dt.py
index 4a63611..7304213 100644
--- a/dtcli/scripts/dt.py
+++ b/dtcli/scripts/dt.py
@@ -194,7 +194,7 @@ def extension():
            b) Generate developer key and certificate from the CA
 
            $ dt ext genca
-           $ dt ext generate-developer-pem --ca-crt ca.crt --ca-key ca.key -o dev.pem
+           $ dt ext generate-developer-pem --ca-crt ca.pem --ca-key ca.key -o dev.pem
 
         2. Build and sign the extension
 
diff --git a/dtcli/version.py b/dtcli/version.py
index 1068025..c588d7d 100644
--- a/dtcli/version.py
+++ b/dtcli/version.py
@@ -12,4 +12,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version__ = "1.6.17"
+__version__ = "1.6.18"
diff --git a/pyproject.toml b/pyproject.toml
index 42e3ce6..750eeb4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -12,7 +12,7 @@ packages = [
 ]
 readme = "README.md"
 repository = "https://github.com/dynatrace-oss/dt-cli"
-version = "1.6.17"
+version = "1.6.18"
 
 [tool.poetry.dependencies]
 PyYAML = "^6.0"