diff --git a/bootstrap/allianceInstaller.sh b/bootstrap/allianceInstaller.sh
index 71f02906..5aa12daa 100755
--- a/bootstrap/allianceInstaller.sh
+++ b/bootstrap/allianceInstaller.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 
       srcDir=${HOME}/coriolis-2.x/src/alliance/alliance/src
-  commonRoot=${HOME}/coriolis-2.x/Linux.el7_64/Release.Shared
+  commonRoot=${HOME}/coriolis-2.x/Linux.el9/Release.Shared
     buildDir=${commonRoot}/build
   installDir=${commonRoot}/install
 
diff --git a/bootstrap/builder/Configuration.py b/bootstrap/builder/Configuration.py
index 98565f28..41ff45f5 100644
--- a/bootstrap/builder/Configuration.py
+++ b/bootstrap/builder/Configuration.py
@@ -122,6 +122,7 @@ class Configuration ( object ):
 
     def _guessOs ( self ):
         self._libSuffix         = None
+        self._osEL9             = re.compile (".*Linux.*(el9|al9).*x86_64.*")
         self._osSlsoc7x_64      = re.compile (".*Linux.*(el7|slsoc7).*x86_64.*")
         self._osSlsoc6x_64      = re.compile (".*Linux.*(el6|slsoc6).*x86_64.*")
         self._osSlsoc6x         = re.compile (".*Linux.*(el6|slsoc6).*")
@@ -145,7 +146,10 @@ class Configuration ( object ):
         uname  = subprocess.Popen ( ["uname", "-srm"], stdout=subprocess.PIPE )
         lines  = uname.stdout.readlines()
         osLine = lines[0].decode( 'ascii' )
-        if self._osSlsoc7x_64.match(osLine):
+        if self._osEL9.match(osLine):
+            self._osType    = "Linux.el9"
+            self._libSuffix = "64"
+        elif self._osSlsoc7x_64.match(osLine):
             self._osType    = "Linux.el7_64"
             self._libSuffix = "64"
         elif self._osSlsoc6x_64.match(osLine):
diff --git a/bootstrap/ccb.py b/bootstrap/ccb.py
index ebd80d53..96bfd663 100755
--- a/bootstrap/ccb.py
+++ b/bootstrap/ccb.py
@@ -62,6 +62,7 @@ def checkCMake ():
 
 def guessOs ():
     libDir            = 'lib'
+    osEL9             = re.compile (".*Linux.*(el9|al9).*x86_64.*")
     osSlsoc7x_64      = re.compile (".*Linux.*(el7|slsoc7).*x86_64.*")
     osSlsoc6x_64      = re.compile (".*Linux.*(el6|slsoc6).*x86_64.*")
     osSlsoc6x         = re.compile (".*Linux.*(el6|slsoc6).*")
@@ -85,7 +86,10 @@ def guessOs ():
     uname = subprocess.Popen ( ["uname", "-srm"], stdout=subprocess.PIPE )
     lines = uname.stdout.readlines()
     line  = lines[0].decode( 'ascii' )
-    if osSlsoc7x_64.match(line):
+    if osEL9.match(line):
+        osType = "Linux.el9"
+        libDir = "lib64"
+    elif osSlsoc7x_64.match(line):
         osType = "Linux.el7_64"
         libDir = "lib64"
     elif osSlsoc6x_64.match(line):
diff --git a/bootstrap/coriolisEnv.py b/bootstrap/coriolisEnv.py
index ab86d3ea..42cf735c 100755
--- a/bootstrap/coriolisEnv.py
+++ b/bootstrap/coriolisEnv.py
@@ -38,6 +38,7 @@ def scrubPath ( pathName ):
 
 def guessOs ():
     useDevtoolset     = False
+    osEL9             = re.compile (".*Linux.*el9.*x86_64.*")
     osSlsoc7x_64      = re.compile (".*Linux.*el7.*x86_64.*")
     osSlsoc6x_64      = re.compile (".*Linux.*el6.*x86_64.*")
     osSlsoc6x         = re.compile (".*Linux.*(el|slsoc)6.*")
@@ -65,6 +66,7 @@ def guessOs ():
 
     line = lines[0].decode( 'ascii' )
     if   osSlsoc7x_64.match(line): osType = "Linux.el7_64"
+    elif osEL9.match(line):        osType = "Linux.el9"
     elif osSlsoc6x_64.match(line):
         osType         = "Linux.slsoc6x_64"
         useDevtoolset  = True
diff --git a/bootstrap/socInstaller.py b/bootstrap/socInstaller.py
index 74c3030f..190cb0e1 100755
--- a/bootstrap/socInstaller.py
+++ b/bootstrap/socInstaller.py
@@ -432,8 +432,12 @@ class Configuration ( object ):
                 raise ErrorMessage( 1, [ 'Cannot find <ccb.py>, should be here:'
                                        , '   "{}"'.format(self.ccbBin)
                                        ] )
-            otherArgs = []
+            otherArgs = [ '--qt5' ]
             if self.debugArg: otherArgs.append( self.debugArg )
+            if target == 'EL9':
+                otherArgs.append( '--project=support' )
+                commands.append( CoriolisCommand( self.ccbBin, self.rootDir, 3, otherArgs          , fdLog=self.fds['coriolis'] ) )
+               #commands.append( CoriolisCommand( self.ccbBin, self.rootDir, 1, otherArgs+['--doc'], fdLog=self.fds['coriolis'] ) )
             if target == 'SL7_64':
                 otherArgs.append( '--project=support' )
                 commands.append( CoriolisCommand( self.ccbBin, self.rootDir, 3, otherArgs          , fdLog=self.fds['coriolis'] ) )
@@ -444,7 +448,6 @@ class Configuration ( object ):
                 commands.append( CoriolisCommand( self.ccbBin, self.rootDir, 6, otherArgs          , fdLog=self.fds['coriolis'] ) )
                 commands.append( CoriolisCommand( self.ccbBin, self.rootDir, 1, otherArgs+['--doc'], fdLog=self.fds['coriolis'] ) )
             elif target == 'Ubuntu18' or target == 'Debian9' or target == 'Debian10':
-                if target == 'Ubuntu18': otherArgs.append( '--qt5' )
                 commands.append( CoriolisCommand( self.ccbBin, self.rootDir, 3, otherArgs, fdLog=self.fds['coriolis'] ) )
         if self.doBenchs:
             commands.append( BenchsCommand( self.benchsDir, fdLog=self.fds['benchs'] ) )