diff --git a/docs/compatibility.md b/docs/compatibility.md
index 2807fb2d..b38da82f 100644
--- a/docs/compatibility.md
+++ b/docs/compatibility.md
@@ -213,14 +213,16 @@ For unsupported extension ids the inspector falls back to a placeholder cell
 correctly via the primitive accessors, callers just have to format the value
 themselves.
 
-## S3 Fixture Status (v0.72.0)
+## S3 Fixture Status (v0.75.0)
 
-> **Note:** the fixture matrix below is locked to `v0.72.0/`. The Rust reference is
-> now at `v0.74.0`; re-run the integration suite against `v0.74.0/arrays/` once
-> upstream publishes the corresponding fixture set, and refresh this section.
+> **Note:** the oracle round-trip suite is pinned to `v0.75.0/` (current Rust
+> release). The bucket reuses identical fixture file names across versions but
+> rewrites the bytes, so the `/tmp/pco-fixtures` cache is version-keyed; bump the
+> `FIXTURE_VERSION` constant in the integration tests and refresh this section
+> when a newer set is published.
 
 Cross-language round-trips tested against Rust-written fixture files hosted at
-`s3://vortex-compat-fixtures/v0.72.0/arrays/`.
+`s3://vortex-compat-fixtures/v0.75.0/arrays/`.
 
 | Fixture                             | Status |
 |-------------------------------------|--------|
@@ -259,6 +261,6 @@ Cross-language round-trips tested against Rust-written fixture files hosted at
 | `pco.vortex`                        | ✅      |
 | `clickbench_hits_5k.compact.vortex` | ✅      |
 | `clickbench_hits_5k.regular.vortex` | ✅      |
-| `masked.vortex`                     | ❓      | No fixture in v0.72.0 |
-| `patched.vortex`                    | ❓      | No fixture in v0.72.0 |
-| `variant.vortex`                    | ❓      | No fixture in v0.72.0 |
+| `masked.vortex`                     | ❓      | No fixture through v0.75.0 |
+| `patched.vortex`                    | ❓      | No fixture through v0.75.0 |
+| `variant.vortex`                    | ❓      | No fixture through v0.75.0 |
diff --git a/integration/src/test/java/io/github/dfa1/vortex/integration/PcoFixtureInspectionIntegrationTest.java b/integration/src/test/java/io/github/dfa1/vortex/integration/PcoFixtureInspectionIntegrationTest.java
index 7b6ef132..55940836 100644
--- a/integration/src/test/java/io/github/dfa1/vortex/integration/PcoFixtureInspectionIntegrationTest.java
+++ b/integration/src/test/java/io/github/dfa1/vortex/integration/PcoFixtureInspectionIntegrationTest.java
@@ -37,7 +37,9 @@
 /// implement first).
 class PcoFixtureInspectionIntegrationTest {
 
-    private static final String BASE = "https://vortex-compat-fixtures.s3.amazonaws.com/v0.72.0/arrays/";
+    private static final String FIXTURE_VERSION = "v0.75.0";
+    private static final String BASE =
+            "https://vortex-compat-fixtures.s3.amazonaws.com/" + FIXTURE_VERSION + "/arrays/";
     private static final String[] FIXTURES = {
             "pco.vortex",
             "tpch_lineitem.compact.vortex",
@@ -303,8 +305,11 @@ private static String formatDType(DType d) {
     }
 
     private static Path downloadIfMissing(Path tmp, String name) throws Exception {
-        // Reuse /tmp/pco-fixtures cache if present.
-        Path cached = Path.of("/tmp/pco-fixtures", name);
+        // Reuse the version-keyed /tmp/pco-fixtures cache if present. The version
+        // segment matters: the Rust reference rewrites identical file names with
+        // different bytes across versions, so a version-less cache would serve
+        // stale bytes after a bump.
+        Path cached = Path.of("/tmp/pco-fixtures", FIXTURE_VERSION, name);
         if (Files.exists(cached)) {
             return cached;
         }
diff --git a/integration/src/test/java/io/github/dfa1/vortex/integration/RustJavaReaderComparisonIntegrationTest.java b/integration/src/test/java/io/github/dfa1/vortex/integration/RustJavaReaderComparisonIntegrationTest.java
index 2eaec3c5..72e9e54a 100644
--- a/integration/src/test/java/io/github/dfa1/vortex/integration/RustJavaReaderComparisonIntegrationTest.java
+++ b/integration/src/test/java/io/github/dfa1/vortex/integration/RustJavaReaderComparisonIntegrationTest.java
@@ -59,7 +59,7 @@
 class RustJavaReaderComparisonIntegrationTest {
 
     private static final URI BASE =
-            URI.create("https://vortex-compat-fixtures.s3.amazonaws.com/v0.72.0/arrays/");
+            URI.create("https://vortex-compat-fixtures.s3.amazonaws.com/v0.75.0/arrays/");
 
     private static final Session SESSION = Session.create();
     private static final BufferAllocator ALLOCATOR = ArrowAllocation.rootAllocator();
diff --git a/integration/src/test/java/io/github/dfa1/vortex/integration/RustWritesJavaReadsIntegrationTest.java b/integration/src/test/java/io/github/dfa1/vortex/integration/RustWritesJavaReadsIntegrationTest.java
index 8a16ffee..70748e63 100644
--- a/integration/src/test/java/io/github/dfa1/vortex/integration/RustWritesJavaReadsIntegrationTest.java
+++ b/integration/src/test/java/io/github/dfa1/vortex/integration/RustWritesJavaReadsIntegrationTest.java
@@ -57,7 +57,9 @@
 /// Cross-compatibility: Rust (JNI) writer → Java reader.
 class RustWritesJavaReadsIntegrationTest {
 
-    private static final String S3_BASE = "https://vortex-compat-fixtures.s3.amazonaws.com/v0.72.0/arrays/";
+    private static final String FIXTURE_VERSION = "v0.75.0";
+    private static final String S3_BASE =
+            "https://vortex-compat-fixtures.s3.amazonaws.com/" + FIXTURE_VERSION + "/arrays/";
 
     private static final Session SESSION = Session.create();
     private static final BufferAllocator ALLOCATOR = ArrowAllocation.rootAllocator();
@@ -218,7 +220,10 @@ private static long[] readJavaLongColumn(Path file, String column) throws IOExce
     }
 
     private static Path downloadIfMissing(Path tmp, String name) throws Exception {
-        Path cached = Path.of("/tmp/pco-fixtures", name);
+        // Cache is keyed by fixture version: the Rust reference rewrites the same
+        // file names with different bytes across versions, so a version-less cache
+        // would silently serve stale bytes after a version bump.
+        Path cached = Path.of("/tmp/pco-fixtures", FIXTURE_VERSION, name);
         if (Files.exists(cached)) {
             return cached;
         }