diff --git a/CHANGELOG.md b/CHANGELOG.md
index 33b8d0c..acd78eb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,23 @@
 # Holiday definitions
 
+## 5.5.0
+
+* Update `si` region to add `novo leto` (thanks to https://github.com/vlakre)
+* Add informal Mothering Sunday in UK+IE (thanks to https://github.com/ericcj)
+* Add Juneteenth for `federalreserve` and `federalreservebanks` (thanks to https://github.com/kapil2004)
+* Create `ke` region with initial holidays (thanks to https://github.com/bkmgit)
+* Add planned 2023 ocurrence of Latvian Song and Dance festival (thanks to https://github.com/aleksandrs-ledovskis)
+* Update `mx` holidays for accuracy (thanks to https://github.com/andres107)
+* Add Juneteenth to NYSE calendar (thanks to https://github.com/vassilios)
+* Add Matariki to `nz` (thanks to https://github.com/bagp1)
+* Adds function to calculate shifting Ekka holiday (thanks to https://github.com/antonivanopoulos)
+* change 9th of May dan pobjede to informal holiday (thanks to https://github.com/KristjanSever)
+* Add AU National Day of Mourning (thanks to https://github.com/justinjones)
+* Correct KE holidays indentation (thanks to https://github.com/hlascelles)
+* Add QEII Memorial Bank Holiday (thanks to https://github.com/hlascelles)
+
 ## 5.4.1
+
 * Add Platinum Jubilee bank holiday for 2022. (thanks to https://github.com/frankieroberto)
 * Fix definitions tests.
 
diff --git a/au.yaml b/au.yaml
index 3daca17..38ff766 100644
--- a/au.yaml
+++ b/au.yaml
@@ -118,6 +118,11 @@ months:
     regions: [au_qld_brisbane]
     function: qld_brisbane_ekka_holiday(year)
   9:
+  - name: National Day of Mourning for Her Majesty Queen Elizabeth II
+    regions: [au]
+    mday: 22
+    year_ranges:
+      limited: [2022]
   - name: Queen's Birthday
     regions: [au_wa]
     week: -1
@@ -794,3 +799,18 @@ tests:
       regions: ["au_qld_brisbane"]
     expect:
       name: "Ekka"
+  - given:
+      date: '2022-09-22'
+      regions: ['au']
+    expect:
+      name: "National Day of Mourning for Her Majesty Queen Elizabeth II"
+  - given:
+      date: '2023-09-22'
+      regions: ['au']
+    expect:
+      holiday: false
+  - given:
+      date: '2021-09-22'
+      regions: ['au']
+    expect:
+      holiday: false
diff --git a/gb.yaml b/gb.yaml
index 1fc3a9c..3306e5a 100644
--- a/gb.yaml
+++ b/gb.yaml
@@ -108,6 +108,12 @@ months:
     regions: [gb_eng, gb_wls, gb_eaw, gb_nir, je, gb_jsy, gg, gb_gsy]
     week: -1
     wday: 1
+  9:
+  - name: Bank Holiday for the State Funeral of Queen Elizabeth II
+    regions: [gb]
+    mday: 19
+    year_ranges:
+      limited: [2022]
   11:
   - name: Guy Fawkes Day
     regions: [gb]
@@ -507,6 +513,21 @@ tests:
       regions: ["gb"]
     expect:
       name: "Platinum Jubilee"
+  - given:
+      date: '2022-09-19'
+      regions: ["gb"]
+    expect:
+      name: "Bank Holiday for the State Funeral of Queen Elizabeth II"
+  - given:
+      date: '2023-09-19'
+      regions: ['gb']
+    expect:
+      holiday: false
+  - given:
+      date: '2021-09-19'
+      regions: ['gb']
+    expect:
+      holiday: false
   - given:
       date: '2023-05-29'
       regions: ["gb"]
diff --git a/ke.yaml b/ke.yaml
index be2be27..e6b9d6d 100644
--- a/ke.yaml
+++ b/ke.yaml
@@ -85,12 +85,12 @@ tests:
       regions: ["ke"]
     expect:
       name: "Huduma Day"
-   - given:
+  - given:
       date: '2018-10-20'
       regions: ["ke"]
     expect:
       name: "Mashujaa Day"
-   - given:
+  - given:
       date: '2019-12-12'
       regions: ["ke"]
     expect:
diff --git a/rs_cyrl.yaml b/rs_cyrl.yaml
index 9c2c2b9..0e9d97b 100644
--- a/rs_cyrl.yaml
+++ b/rs_cyrl.yaml
@@ -54,6 +54,7 @@ months:
     mday: 2
   - name: Дан победе над фашизмом # Victory Day
     regions: [rs_cyrl]
+    type: informal
     mday: 9
   6:
   - name: Видовдан # Saint Vitus Day
@@ -93,6 +94,7 @@ tests:
   - given:
       date: '2017-5-9'
       regions: ["rs_cyrl"]
+      options: ["informal"]
     expect:
       name: "Дан победе над фашизмом"
   - given:
diff --git a/rs_la.yaml b/rs_la.yaml
index a871b90..b8630e5 100644
--- a/rs_la.yaml
+++ b/rs_la.yaml
@@ -54,6 +54,7 @@ months:
     mday: 2
   - name: Dan pobede # Victory Day
     regions: [rs_la]
+    type: informal
     mday: 9
   6:
   - name: Vidovdan # Saint Vitus Day
@@ -93,6 +94,7 @@ tests:
   - given:
       date: '2017-5-9'
       regions: ["rs_la"]
+      options: ["informal"]
     expect:
       name: "Dan pobede"
   - given: