diff --git a/data b/data
index c9f2ed1b3..41a599fb2 160000
--- a/data
+++ b/data
@@ -1 +1 @@
-Subproject commit c9f2ed1b304e07a028cd7d269e84d4f30d5ec000
+Subproject commit 41a599fb211a2bb797963a724bd6a4ffbb964d43
diff --git a/examples/scripts/admm_tv_ct.py b/examples/scripts/admm_tv_ct.py
index 114de7e53..aaf84fdf3 100644
--- a/examples/scripts/admm_tv_ct.py
+++ b/examples/scripts/admm_tv_ct.py
@@ -26,7 +26,7 @@
 import scico.numpy as snp
 from scico import functional, linop, loss, metric, plot
 from scico.admm import ADMM, LinearSubproblemSolver
-from scico.linop.radon import ParallelBeamProjector
+from scico.linop.radon_astra import ParallelBeamProjector
 
 """
 Create a ground truth image.
diff --git a/examples/scripts/admm_tv_ct_weighted.py b/examples/scripts/admm_tv_ct_weighted.py
index e2a0c64eb..b7102fd03 100644
--- a/examples/scripts/admm_tv_ct_weighted.py
+++ b/examples/scripts/admm_tv_ct_weighted.py
@@ -26,7 +26,7 @@
 import scico.numpy as snp
 from scico import functional, linop, loss, metric, plot
 from scico.admm import ADMM, LinearSubproblemSolver
-from scico.linop.radon import ParallelBeamProjector
+from scico.linop.radon_astra import ParallelBeamProjector
 
 """
 Create a ground truth image.
diff --git a/examples/scripts/preconditioned_cg_ct.py b/examples/scripts/preconditioned_cg_ct.py
index 87a4ffc4f..f7d94e038 100644
--- a/examples/scripts/preconditioned_cg_ct.py
+++ b/examples/scripts/preconditioned_cg_ct.py
@@ -22,7 +22,7 @@
 
 from scico import loss, plot
 from scico.linop import CircularConvolve
-from scico.linop.radon import ParallelBeamProjector
+from scico.linop.radon_astra import ParallelBeamProjector
 from scico.solver import cg
 
 """
diff --git a/scico/linop/radon.py b/scico/linop/radon_astra.py
similarity index 100%
rename from scico/linop/radon.py
rename to scico/linop/radon_astra.py
diff --git a/scico/test/linop/test_radon.py b/scico/test/linop/test_radon_astra.py
similarity index 97%
rename from scico/test/linop/test_radon.py
rename to scico/test/linop/test_radon_astra.py
index dc027e763..eac69d670 100644
--- a/scico/test/linop/test_radon.py
+++ b/scico/test/linop/test_radon_astra.py
@@ -7,7 +7,7 @@
 from scico.test.linop.test_linop import adjoint_AAt_test, adjoint_AtA_test
 
 try:
-    from scico.linop.radon import ParallelBeamProjector
+    from scico.linop.radon_astra import ParallelBeamProjector
 except ImportError as e:
     pytest.skip("astra not installed", allow_module_level=True)