diff --git a/buildlib/azure-pipelines.yml b/buildlib/azure-pipelines.yml
index 91b9135a5..ca0bb5ecd 100644
--- a/buildlib/azure-pipelines.yml
+++ b/buildlib/azure-pipelines.yml
@@ -34,7 +34,7 @@ resources:
       image: ucfconsort.azurecr.io/rdma-core/centos9:44.0
       endpoint: ucfconsort_registry
     - container: fedora
-      image: ucfconsort.azurecr.io/rdma-core/fc38:46.0
+      image: ucfconsort.azurecr.io/rdma-core/fc39:49.0
       endpoint: ucfconsort_registry
     - container: xenial
       image: ucfconsort.azurecr.io/rdma-core/ubuntu-16.04:28.0
@@ -195,7 +195,7 @@ stages:
               CONTAINER: centos9
               SPEC: redhat/rdma-core.spec
               RPMBUILD_OPTS:  --define 'EXTRA_CMAKE_FLAGS -DCMAKE_BUILD_TYPE=Debug -DENABLE_WERROR=1'
-            fedora38:
+            fedora39:
               CONTAINER: fedora
               SPEC: redhat/rdma-core.spec
               RPMBUILD_OPTS:  --define 'EXTRA_CMAKE_FLAGS -DCMAKE_BUILD_TYPE=Debug -DENABLE_WERROR=1'
diff --git a/buildlib/cbuild b/buildlib/cbuild
index 691feca7a..3e8714bd7 100755
--- a/buildlib/cbuild
+++ b/buildlib/cbuild
@@ -220,10 +220,10 @@ class centos9(Environment):
                          (" ".join(sorted(self.pkgs))))
         return res
 
-class fc38(Environment):
-    docker_parent = "fedora:38";
+class fc39(Environment):
+    docker_parent = "fedora:39";
     pkgs = centos8.pkgs | {"util-linux"}
-    name = "fc38";
+    name = "fc39";
     specfile = "redhat/rdma-core.spec";
     ninja_cmd = "ninja-build";
     is_rpm = True;
@@ -626,7 +626,7 @@ environments = [centos7(),
                 jammy(),
                 jessie(),
                 stretch(),
-                fc38(),
+                fc39(),
                 leap(),
                 tumbleweed(),
                 debian_experimental(),