diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6468f1f..ba7583f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,13 @@
+## v0.2.0 [2024-02-07]
+
+_What's new?_
+
+- Added pipeline `get_channel_id`. ([#17](https://github.com/turbot/flowpipe-mod-slack/pull/17)).
+
+_Bug fixes_
+
+- Fixed the input parameters of the `test_post_message` pipeline. ([#17](https://github.com/turbot/flowpipe-mod-slack/pull/17))
+
 ## v0.1.0 [2023-12-14]
 
 _What's new?_
diff --git a/README.md b/README.md
index 439af00..ba4b997 100644
--- a/README.md
+++ b/README.md
@@ -8,10 +8,6 @@ Slack pipeline library for [Flowpipe](https://flowpipe.io), enabling seamless in
 
 ## Getting started
 
-### Requirements
-
-Docker daemon must be installed and running. Please see [Install Docker Engine](https://docs.docker.com/engine/install/) for more information.
-
 ### Installation
 
 Download and install Flowpipe (https://flowpipe.io/downloads). Or use Brew:
@@ -100,7 +96,7 @@ flowpipe pipeline list
 Run a pipeline:
 
 ```shell
-flowpipe pipeline run post_message -arg channel=test -arg text="Hello World"
+flowpipe pipeline run post_message --arg channel=test --arg text="Hello World"
 ```
 
 To use a specific `credential`, specify the `cred` pipeline argument:
diff --git a/pipelines/channel/get_channel_id.fp b/pipelines/channel/get_channel_id.fp
new file mode 100644
index 0000000..9322f51
--- /dev/null
+++ b/pipelines/channel/get_channel_id.fp
@@ -0,0 +1,23 @@
+pipeline "get_channel_id" {
+  title       = "Get Channel ID"
+  description = "Get the ID from the channel name."
+
+  param "cred" {
+    type        = string
+    description = local.cred_param_description
+    default     = "default"
+  }
+
+  param "channel_name" {
+    type        = string
+    description = "Name of the channel."
+  }
+
+  step "pipeline" "list_channels" {
+    pipeline = pipeline.list_channels
+  }
+
+  output "channel_id" {
+    value = [for channel in step.pipeline.list_channels.output.channels : channel.id if channel.name == param.channel_name][0]
+  }
+}
diff --git a/pipelines/chat/tests/test_post_message.fp b/pipelines/chat/tests/test_post_message.fp
index ace4841..7fbf6e2 100644
--- a/pipelines/chat/tests/test_post_message.fp
+++ b/pipelines/chat/tests/test_post_message.fp
@@ -1,4 +1,4 @@
-// usage: flowpipe pipeline run test_post_message --pipeline-arg message="Hello World"
+// usage: flowpipe pipeline run test_post_message --arg text="Hello from test_post_message" --arg channel="random"
 pipeline "test_post_message" {
   title       = "Test Post Message"
   description = "Test the post_message pipeline."
@@ -9,7 +9,7 @@ pipeline "test_post_message" {
     default     = "default"
   }
 
-  param "message" {
+  param "text" {
     type        = string
     default     = "Hello World from test_post_message pipeline."
     description = "The formatted text of the message to be published."
@@ -25,7 +25,14 @@ pipeline "test_post_message" {
     args = {
       cred    = param.cred
       channel = param.channel
-      message = param.message
+      text    = param.text
+    }
+  }
+
+  step "pipeline" "get_channel_id" {
+    pipeline = pipeline.get_channel_id
+    args = {
+      channel_name = param.channel
     }
   }
 
@@ -34,7 +41,7 @@ pipeline "test_post_message" {
     pipeline = pipeline.delete_message
     args = {
       cred    = param.cred
-      channel = param.channel
+      channel = step.pipeline.get_channel_id.output.channel_id
       ts      = step.pipeline.post_message.output.message.ts
     }
   }