diff --git a/CHANGELOG.md b/CHANGELOG.md
index 915797a2880fae02e2464518a0adb50b36ac0660..160ec18fede94144ebac2241089d4a50989a6190 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [1.3.1] - 2023-09-04
+### Fixed
+- diskmon: use by default
+
 ## [1.3.0] - 2023-08-30
 ### Added
 - diskmon: new monitor to gather disk information not present elsewhere
diff --git a/entrypoint.sh b/entrypoint.sh
index 271fc412b03e34c621b0fef6198af31d4ac5e5d8..867bcd051be3443fb7d21754a879e8517a1f30cc 100755
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -11,7 +11,7 @@ CMG_MAX_JITTER_DELAY="${CMG_MAX_JITTER_DELAY:-"3"}"
 CMG_OUT_METRICS_DIR="${CMG_OUT_METRICS_DIR:-"${CMG_BASE_DIR}/out-metrics-dir"}"
 CMG_STDOUT_LOG="${CMG_STDOUT_LOG:-"${CMG_BASE_DIR}/custom-metrics-generator.stdout.log"}"
 CMG_STDERR_LOG="${CMG_STDERR_LOG:-"${CMG_BASE_DIR}/custom-metrics-generator.stderr.log"}"
-CMG_EXEC_MODULES="${CMG_EXEC_MODULES:-"smartmon dockermon puppetmon noderolemon gatewaypingmon gpumon"}"
+CMG_EXEC_MODULES="${CMG_EXEC_MODULES:-"smartmon dockermon puppetmon noderolemon gatewaypingmon gpumon diskmon"}"
 CMG_NODEROLEMON_METRICS_TEXTFILE=${CMG_NODEROLEMON_METRICS_TEXTFILE:-"/etc/node-exporter/node-role.prom"}
 
 # load the library