diff --git a/README.new b/README.new
index dee39bb2d..634d9b92a 100644
--- a/README.new
+++ b/README.new
@@ -187,5 +187,7 @@ Lmod 8.7+
    (8.7.51) * Fix bug in load test.
    (8.7.52) * Add MName:isVisible() so that load hooks can figure out if a loaded module is is visible or not.
    (8.7.53) * updating docs to include link to 165_debugging_lmod.rst
+W.I.P.:   
+   (8.7.54) * Disallow fast TCL interp with TCL 9+.  This will hopely fixed in the future (;->)
    
    
diff --git a/configure b/configure
index 5910333a3..94d3e07df 100755
--- a/configure
+++ b/configure
@@ -4641,9 +4641,9 @@ fi
       DIR=$(xcrun --show-sdk-path)
       TCL_INCLUDE="-I${DIR}/usr/include"
    else
-      for i in "" tcl tcl8.8 tcl8.7 tcl8.6 tcl8.5; do
-         if test -f /usr/include/$i/tcl.h ; then
-            TCL_INCLUDE="-I/usr/include/$i"
+      for i in /usr/include /usr/include/tcl /usr/include/tcl9* /usr/include/tcl8*  ; do
+         if test -f $i/tcl.h ; then
+            TCL_INCLUDE="-I$i"
             break;
          fi
       done
diff --git a/configure.ac b/configure.ac
index cefffd6e5..43e1260a5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -770,9 +770,9 @@ if test "$FAST_TCL_INTERP" = yes ; then
       DIR=$(xcrun --show-sdk-path)
       TCL_INCLUDE="-I${DIR}/usr/include"
    else
-      for i in "" tcl tcl8.8 tcl8.7 tcl8.6 tcl8.5; do
-         if test -f /usr/include/$i/tcl.h ; then
-            TCL_INCLUDE="-I/usr/include/$i"
+      for i in /usr/include /usr/include/tcl /usr/include/tcl9* /usr/include/tcl8*  ; do
+         if test -f $i/tcl.h ; then
+            TCL_INCLUDE="-I$i"
             break;
          fi
       done