diff --git a/CMakeLists.txt b/CMakeLists.txt
index ac372c362..5b0200bdf 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -12,7 +12,7 @@ file(STRINGS VERSION NS3_VER)
 
 # minimum compiler versions
 set(AppleClang_MinVersion 13.1.6)
-set(Clang_MinVersion 10.0.0)
+set(Clang_MinVersion 11.0.0)
 set(GNU_MinVersion 10.1.0)
 
 # common options
diff --git a/utils/tests/test-ns3.py b/utils/tests/test-ns3.py
index 5dd83ca4f..e5081d4ec 100755
--- a/utils/tests/test-ns3.py
+++ b/utils/tests/test-ns3.py
@@ -1937,12 +1937,13 @@ class NS3ConfigureTestCase(NS3BaseTestCase):
         run_ns3("clean")
         with DockerContainerManager(self, "ubuntu:20.04") as container:
             container.execute("apt-get update")
-            container.execute("apt-get install -y python3 cmake clang-10")
+            container.execute("apt-get remove -y g++")
+            container.execute("apt-get install -y python3 cmake g++-10 clang-11")
 
             # Enable Ninja tracing without using the Ninja generator
             try:
                 container.execute(
-                    "./ns3 configure --enable-modules=core --enable-ninja-tracing -- -DCMAKE_CXX_COMPILER=/usr/bin/clang++-10"
+                    "./ns3 configure --enable-modules=core --enable-ninja-tracing -- -DCMAKE_CXX_COMPILER=/usr/bin/clang++-11"
                 )
             except DockerException as e:
                 self.assertIn("Ninjatracing requires the Ninja generator", e.stderr)
@@ -1954,7 +1955,7 @@ class NS3ConfigureTestCase(NS3BaseTestCase):
             # Enable Ninjatracing support without git (should fail)
             try:
                 container.execute(
-                    "./ns3 configure -G Ninja --enable-modules=core --enable-ninja-tracing -- -DCMAKE_CXX_COMPILER=/usr/bin/clang++-10"
+                    "./ns3 configure -G Ninja --enable-modules=core --enable-ninja-tracing -- -DCMAKE_CXX_COMPILER=/usr/bin/clang++-11"
                 )
             except DockerException as e:
                 self.assertIn("could not find git for clone of NinjaTracing", e.stderr)
@@ -1963,7 +1964,7 @@ class NS3ConfigureTestCase(NS3BaseTestCase):
             # Enable Ninjatracing support with git (it should succeed)
             try:
                 container.execute(
-                    "./ns3 configure -G Ninja --enable-modules=core --enable-ninja-tracing -- -DCMAKE_CXX_COMPILER=/usr/bin/clang++-10"
+                    "./ns3 configure -G Ninja --enable-modules=core --enable-ninja-tracing -- -DCMAKE_CXX_COMPILER=/usr/bin/clang++-11"
                 )
             except DockerException as e:
                 self.assertTrue(False, "Failed to configure with Ninjatracing")
@@ -1992,7 +1993,7 @@ class NS3ConfigureTestCase(NS3BaseTestCase):
             # Enable Clang TimeTrace feature for more detailed traces
             try:
                 container.execute(
-                    "./ns3 configure -G Ninja --enable-modules=core --enable-ninja-tracing -- -DCMAKE_CXX_COMPILER=/usr/bin/clang++-10 -DNS3_CLANG_TIMETRACE=ON"
+                    "./ns3 configure -G Ninja --enable-modules=core --enable-ninja-tracing -- -DCMAKE_CXX_COMPILER=/usr/bin/clang++-11 -DNS3_CLANG_TIMETRACE=ON"
                 )
             except DockerException as e:
                 self.assertTrue(False, "Failed to configure Ninjatracing with Clang's TimeTrace")