diff --git a/requirements.txt b/requirements.txt
index 8394c22..02e7510 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,2 @@
 VapourSynth>=68
-vstools>=3.0.0
\ No newline at end of file
+vstools>=3.2.0
\ No newline at end of file
diff --git a/vsexprtools/_metadata.py b/vsexprtools/_metadata.py
index aae2efb..7f92a31 100644
--- a/vsexprtools/_metadata.py
+++ b/vsexprtools/_metadata.py
@@ -1,6 +1,6 @@
 """VapourSynth functions and helpers for writing RPN expressions."""
 
-__version__ = '1.5.1'
+__version__ = '1.6.0'
 
 __author_name__, __author_email__ = 'Setsugen no ao', 'setsugen@setsugen.dev'
 __maintainer_name__, __maintainer_email__ = __author_name__, __author_email__