diff --git a/docs/building_blocks.md b/docs/building_blocks.md
index d866fda1..f9ae623a 100644
--- a/docs/building_blocks.md
+++ b/docs/building_blocks.md
@@ -4198,8 +4198,8 @@ configuring.  For instance, `enable_foo=True` maps to
 Underscores in the parameter name are converted to dashes.
 
 - __environment__: Boolean flag to specify whether the environment
-(`LD_LIBRARY_PATH` and `PATH`) should be modified to include
-UCX. The default is True.
+(`CPATH`, `LD_LIBRARY_PATH`, `LIBRARY_PATH`, and `PATH`) should be
+modified to include UCX. The default is True.
 
 - __gdrcopy__: Flag to control whether gdrcopy is used by the build.  If
 True, adds `--with-gdrcopy` to the list of `configure` options.
diff --git a/hpccm/building_blocks/ucx.py b/hpccm/building_blocks/ucx.py
index eb6e055f..c3738d6c 100644
--- a/hpccm/building_blocks/ucx.py
+++ b/hpccm/building_blocks/ucx.py
@@ -86,8 +86,8 @@ class ucx(bb_base, hpccm.templates.downloader, hpccm.templates.envvars,
     Underscores in the parameter name are converted to dashes.
 
     environment: Boolean flag to specify whether the environment
-    (`LD_LIBRARY_PATH` and `PATH`) should be modified to include
-    UCX. The default is True.
+    (`CPATH`, `LD_LIBRARY_PATH`, `LIBRARY_PATH`, and `PATH`) should be
+    modified to include UCX. The default is True.
 
     gdrcopy: Flag to control whether gdrcopy is used by the build.  If
     True, adds `--with-gdrcopy` to the list of `configure` options.
@@ -223,6 +223,10 @@ def __init__(self, **kwargs):
         kwargs['url'] = self.url
 
         # Setup the environment variables
+        self.environment_variables['CPATH'] = '{}:$CPATH'.format(
+            posixpath.join(self.__prefix, 'include'))
+        self.environment_variables['LIBRARY_PATH'] = '{}:$LIBRARY_PATH'.format(
+            posixpath.join(self.__prefix, 'lib'))
         self.environment_variables['PATH'] = '{}:$PATH'.format(
             posixpath.join(self.__prefix, 'bin'))
         if not self.ldconfig:
diff --git a/test/test_ucx.py b/test/test_ucx.py
index 74c18cfc..e91acda1 100644
--- a/test/test_ucx.py
+++ b/test/test_ucx.py
@@ -53,7 +53,9 @@ def test_defaults_ubuntu(self):
     make -j$(nproc) && \
     make -j$(nproc) install && \
     rm -rf /var/tmp/ucx-1.8.0 /var/tmp/ucx-1.8.0.tar.gz
-ENV LD_LIBRARY_PATH=/usr/local/ucx/lib:$LD_LIBRARY_PATH \
+ENV CPATH=/usr/local/ucx/include:$CPATH \
+    LD_LIBRARY_PATH=/usr/local/ucx/lib:$LD_LIBRARY_PATH \
+    LIBRARY_PATH=/usr/local/ucx/lib:$LIBRARY_PATH \
     PATH=/usr/local/ucx/bin:$PATH''')
 
     @x86_64
@@ -77,7 +79,9 @@ def test_defaults_centos(self):
     make -j$(nproc) && \
     make -j$(nproc) install && \
     rm -rf /var/tmp/ucx-1.8.0 /var/tmp/ucx-1.8.0.tar.gz
-ENV LD_LIBRARY_PATH=/usr/local/ucx/lib:$LD_LIBRARY_PATH \
+ENV CPATH=/usr/local/ucx/include:$CPATH \
+    LD_LIBRARY_PATH=/usr/local/ucx/lib:$LD_LIBRARY_PATH \
+    LIBRARY_PATH=/usr/local/ucx/lib:$LIBRARY_PATH \
     PATH=/usr/local/ucx/bin:$PATH''')
 
     @x86_64
@@ -103,7 +107,9 @@ def test_with_paths_ubuntu(self):
     make -j$(nproc) && \
     make -j$(nproc) install && \
     rm -rf /var/tmp/ucx-1.8.0 /var/tmp/ucx-1.8.0.tar.gz
-ENV LD_LIBRARY_PATH=/usr/local/ucx/lib:$LD_LIBRARY_PATH \
+ENV CPATH=/usr/local/ucx/include:$CPATH \
+    LD_LIBRARY_PATH=/usr/local/ucx/lib:$LD_LIBRARY_PATH \
+    LIBRARY_PATH=/usr/local/ucx/lib:$LIBRARY_PATH \
     PATH=/usr/local/ucx/bin:$PATH''')
 
     @x86_64
@@ -128,7 +134,9 @@ def test_with_true_ubuntu(self):
     make -j$(nproc) && \
     make -j$(nproc) install && \
     rm -rf /var/tmp/ucx-1.8.0 /var/tmp/ucx-1.8.0.tar.gz
-ENV LD_LIBRARY_PATH=/usr/local/ucx/lib:$LD_LIBRARY_PATH \
+ENV CPATH=/usr/local/ucx/include:$CPATH \
+    LD_LIBRARY_PATH=/usr/local/ucx/lib:$LD_LIBRARY_PATH \
+    LIBRARY_PATH=/usr/local/ucx/lib:$LIBRARY_PATH \
     PATH=/usr/local/ucx/bin:$PATH''')
 
     @x86_64
@@ -153,7 +161,9 @@ def test_with_false_ubuntu(self):
     make -j$(nproc) && \
     make -j$(nproc) install && \
     rm -rf /var/tmp/ucx-1.8.0 /var/tmp/ucx-1.8.0.tar.gz
-ENV LD_LIBRARY_PATH=/usr/local/ucx/lib:$LD_LIBRARY_PATH \
+ENV CPATH=/usr/local/ucx/include:$CPATH \
+    LD_LIBRARY_PATH=/usr/local/ucx/lib:$LD_LIBRARY_PATH \
+    LIBRARY_PATH=/usr/local/ucx/lib:$LIBRARY_PATH \
     PATH=/usr/local/ucx/bin:$PATH''')
 
     @x86_64
@@ -179,7 +189,9 @@ def test_ldconfig(self):
     make -j$(nproc) install && \
     echo "/usr/local/ucx/lib" >> /etc/ld.so.conf.d/hpccm.conf && ldconfig && \
     rm -rf /var/tmp/ucx-1.4.0 /var/tmp/ucx-1.4.0.tar.gz
-ENV PATH=/usr/local/ucx/bin:$PATH''')
+ENV CPATH=/usr/local/ucx/include:$CPATH \
+    LIBRARY_PATH=/usr/local/ucx/lib:$LIBRARY_PATH \
+    PATH=/usr/local/ucx/bin:$PATH''')
 
     @x86_64
     @ubuntu
@@ -225,7 +237,9 @@ def test_ppc64le(self):
     make -j$(nproc) && \
     make -j$(nproc) install && \
     rm -rf /var/tmp/ucx-1.5.2 /var/tmp/ucx-1.5.2.tar.gz
-ENV LD_LIBRARY_PATH=/usr/local/ucx/lib:$LD_LIBRARY_PATH \
+ENV CPATH=/usr/local/ucx/include:$CPATH \
+    LD_LIBRARY_PATH=/usr/local/ucx/lib:$LD_LIBRARY_PATH \
+    LIBRARY_PATH=/usr/local/ucx/lib:$LIBRARY_PATH \
     PATH=/usr/local/ucx/bin:$PATH''')
 
     @x86_64
@@ -255,7 +269,9 @@ def test_git_repository_true(self):
     make -j$(nproc) && \
     make -j$(nproc) install && \
     rm -rf /var/tmp/ucx
-ENV LD_LIBRARY_PATH=/usr/local/ucx/lib:$LD_LIBRARY_PATH \
+ENV CPATH=/usr/local/ucx/include:$CPATH \
+    LD_LIBRARY_PATH=/usr/local/ucx/lib:$LD_LIBRARY_PATH \
+    LIBRARY_PATH=/usr/local/ucx/lib:$LIBRARY_PATH \
     PATH=/usr/local/ucx/bin:$PATH''')
 
     @x86_64
@@ -286,7 +302,9 @@ def test_git_repository_value(self):
     make -j$(nproc) && \
     make -j$(nproc) install && \
     rm -rf /var/tmp/ucx
-ENV LD_LIBRARY_PATH=/usr/local/ucx/lib:$LD_LIBRARY_PATH \
+ENV CPATH=/usr/local/ucx/include:$CPATH \
+    LD_LIBRARY_PATH=/usr/local/ucx/lib:$LD_LIBRARY_PATH \
+    LIBRARY_PATH=/usr/local/ucx/lib:$LIBRARY_PATH \
     PATH=/usr/local/ucx/bin:$PATH''')
 
     @ubuntu
@@ -302,5 +320,7 @@ def test_runtime(self):
         binutils && \
     rm -rf /var/lib/apt/lists/*
 COPY --from=0 /usr/local/ucx /usr/local/ucx
-ENV LD_LIBRARY_PATH=/usr/local/ucx/lib:$LD_LIBRARY_PATH \
+ENV CPATH=/usr/local/ucx/include:$CPATH \
+    LD_LIBRARY_PATH=/usr/local/ucx/lib:$LD_LIBRARY_PATH \
+    LIBRARY_PATH=/usr/local/ucx/lib:$LIBRARY_PATH \
     PATH=/usr/local/ucx/bin:$PATH''')