diff --git a/CHANGELOG.md b/CHANGELOG.md
index 281016dd..6549e1ed 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,5 @@
-- V ...
+- V 2.2.2.2:
+    - uses newer version of sequence-formats, improving 
     - Changed "PoseidonID" to the correct "Poseidon_ID" in an error message and on the server website.
 - V 2.2.2.1:
     - Update of the sequence-formats dependency because of a purely technical build issue on windows, caused by a non-standard directory name.
diff --git a/poseidon-hs.cabal b/poseidon-hs.cabal
index 1c0f4468..6ad6f8d4 100644
--- a/poseidon-hs.cabal
+++ b/poseidon-hs.cabal
@@ -1,5 +1,5 @@
 name:                poseidon-hs
-version:             2.2.2.1
+version:             2.2.2.2
 synopsis:            A package with tools for working with Poseidon genotype data
 description:         The tools in this package read and analyse Poseidon-formatted genotype databases, a modular system for storing genotype data from thousands of individuals.
 license:             MIT
diff --git a/stack.yaml b/stack.yaml
index bb2f88f5..a8c295a3 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -6,6 +6,6 @@ extra-deps:
 - table-layout-0.9.1.0 # not available any more in lts-22.43
 # - sequence-formats-1.11.0.2 # not available yet in lts-22.43
 - git: https://github.com/stschiff/sequence-formats
-  commit: c041087f4f4f563625f141346ef69186cd685c21
+  commit: 33fcbe867647a834105a7ee02081c14e2dcba575
 - scotty-0.22 # not available yet in lts-22.43
 allow-newer: true
diff --git a/stack.yaml.lock b/stack.yaml.lock
index cc69428f..5e5e97ac 100644
--- a/stack.yaml.lock
+++ b/stack.yaml.lock
@@ -12,15 +12,15 @@ packages:
   original:
     hackage: table-layout-0.9.1.0
 - completed:
-    commit: c041087f4f4f563625f141346ef69186cd685c21
+    commit: 33fcbe867647a834105a7ee02081c14e2dcba575
     git: https://github.com/stschiff/sequence-formats
     name: sequence-formats
     pantry-tree:
-      sha256: 3696aae63bb2ca89160fb36aa0b412220892547f4fb4fcea25f6df43c884c47a
+      sha256: 7ac8b9e8b9600769bbf74c4a9d8016bd9e130a55873825ea35df685e15b627db
       size: 3026
-    version: 1.11.0.3
+    version: 1.11.0.4
   original:
-    commit: c041087f4f4f563625f141346ef69186cd685c21
+    commit: 33fcbe867647a834105a7ee02081c14e2dcba575
     git: https://github.com/stschiff/sequence-formats
 - completed:
     hackage: scotty-0.22@sha256:b3c799b3c4896176342062c1140c290ffb9a8d81e6da2ea3e12f7a83cbda78d4,6013
diff --git a/test/PoseidonGoldenTests/GoldenTestData/genoconvert/out_vcf/Schiffels_2016.vcf.gz b/test/PoseidonGoldenTests/GoldenTestData/genoconvert/out_vcf/Schiffels_2016.vcf.gz
index 7277eb16..8de0bfeb 100644
Binary files a/test/PoseidonGoldenTests/GoldenTestData/genoconvert/out_vcf/Schiffels_2016.vcf.gz and b/test/PoseidonGoldenTests/GoldenTestData/genoconvert/out_vcf/Schiffels_2016.vcf.gz differ