diff --git a/pgxn/neon/Makefile b/pgxn/neon/Makefile
index 7ea767ec74..0bcb9545a6 100644
--- a/pgxn/neon/Makefile
+++ b/pgxn/neon/Makefile
@@ -21,7 +21,7 @@ SHLIB_LINK_INTERNAL = $(libpq)
 SHLIB_LINK = -lcurl
 
 EXTENSION = neon
-DATA = neon--1.0.sql neon--1.0--1.1.sql neon--1.1--1.2.sql neon--1.2--1.3.sql
+DATA = neon--1.0.sql neon--1.0--1.1.sql neon--1.1--1.2.sql neon--1.2--1.3.sql neon--1.3--1.2.sql neon--1.2--1.1.sql neon--1.1--1.0.sql
 PGFILEDESC = "neon - cloud storage for PostgreSQL"
 
 EXTRA_CLEAN = \
diff --git a/pgxn/neon/neon--1.1--1.0.sql b/pgxn/neon/neon--1.1--1.0.sql
new file mode 100644
index 0000000000..e83e3104e8
--- /dev/null
+++ b/pgxn/neon/neon--1.1--1.0.sql
@@ -0,0 +1,6 @@
+-- the order of operations is important here
+-- because the view depends on the function
+
+DROP VIEW IF EXISTS neon_lfc_stats CASCADE;
+
+DROP FUNCTION IF EXISTS neon_get_lfc_stats CASCADE;
diff --git a/pgxn/neon/neon--1.2--1.1.sql b/pgxn/neon/neon--1.2--1.1.sql
new file mode 100644
index 0000000000..c9f6a40f73
--- /dev/null
+++ b/pgxn/neon/neon--1.2--1.1.sql
@@ -0,0 +1 @@
+DROP VIEW IF EXISTS NEON_STAT_FILE_CACHE CASCADE;
diff --git a/pgxn/neon/neon--1.3--1.2.sql b/pgxn/neon/neon--1.3--1.2.sql
new file mode 100644
index 0000000000..2733a15c75
--- /dev/null
+++ b/pgxn/neon/neon--1.3--1.2.sql
@@ -0,0 +1 @@
+DROP FUNCTION IF EXISTS approximate_working_set_size(bool) CASCADE;
diff --git a/test_runner/regress/test_neon_extension.py b/test_runner/regress/test_neon_extension.py
index 1179a3afe9..e31e1cab51 100644
--- a/test_runner/regress/test_neon_extension.py
+++ b/test_runner/regress/test_neon_extension.py
@@ -29,3 +29,34 @@ def test_neon_extension(neon_env_builder: NeonEnvBuilder):
             log.info(res)
             assert len(res) == 1
             assert len(res[0]) == 5
+
+
+# Verify that the neon extension can be upgraded/downgraded.
+def test_neon_extension_compatibility(neon_env_builder: NeonEnvBuilder):
+    env = neon_env_builder.init_start()
+    env.neon_cli.create_branch("test_neon_extension_compatibility")
+
+    endpoint_main = env.endpoints.create("test_neon_extension_compatibility")
+    # don't skip pg_catalog updates - it runs CREATE EXTENSION neon
+    endpoint_main.respec(skip_pg_catalog_updates=False)
+    endpoint_main.start()
+
+    with closing(endpoint_main.connect()) as conn:
+        with conn.cursor() as cur:
+            all_versions = ["1.3", "1.2", "1.1", "1.0"]
+            current_version = "1.3"
+            for idx, begin_version in enumerate(all_versions):
+                for target_version in all_versions[idx + 1 :]:
+                    if current_version != begin_version:
+                        cur.execute(
+                            f"ALTER EXTENSION neon UPDATE TO '{begin_version}'; -- {current_version}->{begin_version}"
+                        )
+                        current_version = begin_version
+                    # downgrade
+                    cur.execute(
+                        f"ALTER EXTENSION neon UPDATE TO '{target_version}'; -- {begin_version}->{target_version}"
+                    )
+                    # upgrade
+                    cur.execute(
+                        f"ALTER EXTENSION neon UPDATE TO '{begin_version}'; -- {target_version}->{begin_version}"
+                    )