diff --git a/cppcheck/build.sh b/cppcheck/build.sh
index e9915a9..5b6c66d 100755
--- a/cppcheck/build.sh
+++ b/cppcheck/build.sh
@@ -4,7 +4,7 @@ set -e
 DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null && pwd)"
 cd "$DIR"
 
-VERSION="2.19.1"
+VERSION="2.16.0"
 INSTALL_DIR="$DIR/cppcheck/install"
 
 # Idempotent: skip if already built
diff --git a/cppcheck/pyproject.toml b/cppcheck/pyproject.toml
index 6ef849f..c5a1b0d 100644
--- a/cppcheck/pyproject.toml
+++ b/cppcheck/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "cppcheck"
-version = "2.19.1"
+version = "2.16.0"
 description = "Cppcheck static analysis tool"
 requires-python = ">=3.8"