diff --git a/package/tcllib/tcllib.hash b/package/tcllib/tcllib.hash
index fb80841998..fe0ece238e 100644
--- a/package/tcllib/tcllib.hash
+++ b/package/tcllib/tcllib.hash
@@ -1,5 +1,5 @@
-# From https://core.tcl-lang.org/tcllib/uv/tcllib-1.20.SHA256
-sha256  199e8ec7ee26220e8463bc84dd55c44965fc8ef4d4ac6e4684b2b1c03b1bd5b9  tcllib-1.20.tar.xz
+# From https://core.tcl-lang.org/tcllib/uv/tcllib-1.21.SHA256
+sha256  10c7749e30fdd6092251930e8a1aa289b193a3b7f1abf17fee1d4fa89814762f  tcllib-1.21.tar.xz
 
 # Locally computed:
 sha256  38e1f556213f4008cfd280457af57c76a1fe043dc026ece1c704c09b5f6e865c  license.terms
diff --git a/package/tcllib/tcllib.mk b/package/tcllib/tcllib.mk
index 0f60eb8aca..1f2b575b29 100644
--- a/package/tcllib/tcllib.mk
+++ b/package/tcllib/tcllib.mk
@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-TCLLIB_VERSION = 1.20
+TCLLIB_VERSION = 1.21
 TCLLIB_SOURCE = tcllib-$(TCLLIB_VERSION).tar.xz
 TCLLIB_SITE = http://downloads.sourceforge.net/project/tcllib/tcllib/$(TCLLIB_VERSION)
 TCLLIB_LICENSE = TCL