diff --git a/README.md b/README.md
index 201b897f..372f0111 100644
--- a/README.md
+++ b/README.md
@@ -197,6 +197,18 @@ RUN apk add --no-cache bash
 USER yq
 ```
 
+#### Missing timezone data
+By default, the alpine image yq uses does not include timezone data. If you'd like to use the `tz` operator, you'll need to include this data:
+
+```
+FROM mikefarah/yq
+
+USER root
+RUN apk add --no-cache tzdata
+USER yq
+```
+
+
 ### GitHub Action
 ```
   - name: Set foobar to cool
diff --git a/cmd/version.go b/cmd/version.go
index e5fc8ec9..b5e8be1d 100644
--- a/cmd/version.go
+++ b/cmd/version.go
@@ -11,7 +11,7 @@ var (
 	GitDescribe string
 
 	// Version is main version number that is being run at the moment.
-	Version = "4.19.1"
+	Version = "4.20.1"
 
 	// VersionPrerelease is a pre-release marker for the version. If this is "" (empty string)
 	// then it means that it is a final release. Otherwise, this is a pre-release
diff --git a/release_notes.txt b/release_notes.txt
index 90aba7bf..7a849935 100644
--- a/release_notes.txt
+++ b/release_notes.txt
@@ -1,3 +1,12 @@
+4.20.1:
+  - New [Date Operators]((https://mikefarah.gitbook.io/yq/operators/datetime)) (now, tz, add and subtract durations from dates) 
+  - Can now decode property files!
+  - New flag to manually set expression if required
+  - ZSH completion bug fix (#1108) thanks @whi-tw
+  - Fixed SEGV error (#1096)
+  - Fixed Github actions issues (it pipes in /dev/null) for XML
+  - Fixed bug - handle expressions that match a directory (e.g. ".")
+
 4.19.1:
   - New [eval](https://mikefarah.gitbook.io/yq/operators/eval) _operator_ that allows dynamic expression evaluation (e.g. from a env variable) (#1087)
   - Adding new elements to array now automatically applies styling of existing elements (#722)
diff --git a/snap/snapcraft.yaml b/snap/snapcraft.yaml
index 3bd8938d..3b5db637 100644
--- a/snap/snapcraft.yaml
+++ b/snap/snapcraft.yaml
@@ -1,5 +1,5 @@
 name: yq
-version: '4.19.1'
+version: '4.20.1'
 summary: A lightweight and portable command-line YAML processor
 description: |
   The aim of the project is to be the jq or sed of yaml files.