diff --git a/.github/workflows/linux-ci.yml b/.github/workflows/linux-ci.yml
index 6db21cd..12b8a0e 100644
--- a/.github/workflows/linux-ci.yml
+++ b/.github/workflows/linux-ci.yml
@@ -21,8 +21,8 @@ jobs:
       run: |
         sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
         sudo apt-get update -qq
-        sudo apt-get install -y gcc-7 g++-7
-        sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-7 70 --slave /usr/bin/g++ g++ /usr/bin/g++-7
+        sudo apt-get install -y gcc-11 g++-11
+        sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-11 110 --slave /usr/bin/g++ g++ /usr/bin/g++-11
         sudo apt-get install -y tcl8.6-dev tcllib libxml2-dev libxslt-dev
     - name: configure
       run: |
@@ -32,7 +32,6 @@ jobs:
       run: make
     - name: install
       run: sudo make install
-      
 # TODO: multiple tests currently fail and/or hang.
-#    - name: test
-#      run: make test
+    - name: test
+      run: make TESTOPTS="-debug 1" test-tclxml test-tcldom
diff --git a/tclxml-tcl/tclparser-8.0.tcl b/tclxml-tcl/tclparser-8.0.tcl
index 5616a79..48351c3 100755
--- a/tclxml-tcl/tclparser-8.0.tcl
+++ b/tclxml-tcl/tclparser-8.0.tcl
@@ -18,11 +18,11 @@
 
 package require -exact Tcl 8.0
 
-package require xmldefs 3.3
+package require xmldefs 3.3.1
 
 package require sgmlparser 1.0
 
-package provide xml::tclparser 3.3
+package provide xml::tclparser 3.3.1
 
 namespace eval xml {
 
diff --git a/tclxml-tcl/tclparser-8.1.tcl b/tclxml-tcl/tclparser-8.1.tcl
index 22cf192..6abbcd2 100755
--- a/tclxml-tcl/tclparser-8.1.tcl
+++ b/tclxml-tcl/tclparser-8.1.tcl
@@ -18,9 +18,9 @@
 
 package require Tcl 8.1
 
-package provide xml::tclparser 3.3
+package provide xml::tclparser 3.3.1
 
-package require xmldefs 3.3
+package require xmldefs 3.3.1
 
 package require sgmlparser 1.0
 
diff --git a/tclxml-tcl/xml-8.0.tcl b/tclxml-tcl/xml-8.0.tcl
index f6351bf..a5e18ae 100755
--- a/tclxml-tcl/xml-8.0.tcl
+++ b/tclxml-tcl/xml-8.0.tcl
@@ -19,7 +19,7 @@ package require -exact Tcl 8.0
 
 package require sgml 1.8
 
-package provide xmldefs 3.3
+package provide xmldefs 3.3.1
 
 namespace eval xml {
 
diff --git a/tclxml-tcl/xml-8.1.tcl b/tclxml-tcl/xml-8.1.tcl
index dfacdb2..fa041a4 100755
--- a/tclxml-tcl/xml-8.1.tcl
+++ b/tclxml-tcl/xml-8.1.tcl
@@ -17,7 +17,7 @@
 
 package require Tcl 8.1
 
-package provide xmldefs 3.3
+package provide xmldefs 3.3.1
 
 package require sgml 1.8
 
diff --git a/tclxml-tcl/xml__tcl.tcl b/tclxml-tcl/xml__tcl.tcl
index 9bcaa19..79976e3 100644
--- a/tclxml-tcl/xml__tcl.tcl
+++ b/tclxml-tcl/xml__tcl.tcl
@@ -14,7 +14,7 @@
 #
 # $Id: xml__tcl.tcl,v 1.15.2.1 2005/12/28 06:49:51 balls Exp $
 
-package provide xml::tcl 3.3
+package provide xml::tcl 3.3.1
 
 namespace eval xml {
     namespace export configure parser parserclass