diff --git a/src/test/java/io/r2dbc/postgresql/AbstractCodecIntegrationTests.java b/src/test/java/io/r2dbc/postgresql/AbstractCodecIntegrationTests.java
index 1cd585a2..daf3d648 100644
--- a/src/test/java/io/r2dbc/postgresql/AbstractCodecIntegrationTests.java
+++ b/src/test/java/io/r2dbc/postgresql/AbstractCodecIntegrationTests.java
@@ -435,7 +435,7 @@ void localDateTime() {
         testCodec(LocalDateTime.class, LocalDateTime.now().truncatedTo(ChronoUnit.MICROS), "TIMESTAMP");
         testCodec(LocalDateTime.class, LocalDateTime.now().truncatedTo(ChronoUnit.MICROS), "TIMESTAMPTZ");
 
-        Instant now = Instant.now();
+        Instant now = Instant.now().truncatedTo(ChronoUnit.MICROS);
         LocalDateTime ldt = now.atZone(ZoneId.systemDefault()).toLocalDateTime();
         testCodec(LocalDateTime.class, ldt, Instant.class, (actual, expected) -> {