diff --git a/tools/gen.sh b/tools/gen.sh
deleted file mode 100755
index 757815e26..000000000
--- a/tools/gen.sh
+++ /dev/null
@@ -1,22 +0,0 @@
-#!/usr/bin/env bash
-
-datamodel-codegen \
-  --collapse-root-models \
-  --disable-timestamp \
-  --enable-version-header \
-  --enum-field-as-litera all \
-  --field-constraints \
-  --input $1 \
-  --input-file-type jsonschema \
-  --output src/fmu/dataio/models/meta.py \
-  --output-model-type pydantic_v2.BaseModel \
-  --snake-case-field \
-  --strict-nullable \
-  --strip-default-none \
-  --target-python-version 3.8 \
-  --use-default-kwarg \
-  --use-double-quotes \
-  --use-schema-description \
-  --use-standard-collections \
-  --use-subclass-enum \
-  --use-title-as-name