diff --git a/iocBoot/templates/Makefile.base b/iocBoot/templates/Makefile.base
index 0bd28f7..a8d8f09 100644
--- a/iocBoot/templates/Makefile.base
+++ b/iocBoot/templates/Makefile.base
@@ -25,7 +25,7 @@ TEMPLATE_PATH ?= $(IOC_TOP)/iocBoot/templates
 STCMD_TEMPLATE ?= st.cmd.template
 ADS_IOC_NAME := $(shell basename "$(IOC_INSTANCE_PATH)")
 PRODUCTION_IOC ?= 0
-PYTMC_MIN_VERSION ?= 2.14.0
+PYTMC_MIN_VERSION ?= 2.17.0
 # The minimum callback queue size for EPICS IOCs:
 QUEUE_SIZE_BASE ?= 2000
 # Additional records generated from the PLC project will increase the callback