diff --git a/DESCRIPTION b/DESCRIPTION
index ca8c36a2..6420507e 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,7 +1,7 @@
 Package: report
 Type: Package
 Title: Automated Reporting of Results and Statistical Models
-Version: 0.6.3.1
+Version: 0.6.3.2
 Authors@R:
     c(person(given = "Dominique",
              family = "Makowski",
diff --git a/NEWS.md b/NEWS.md
index 5a417704..cc424889 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -2,6 +2,7 @@
 
 Bug fixes
 
+* `report.anova()`: fix missing denominator degrees of freedom in lmerTest ANOVA reports (#453)
 * Fix `report()` crash when character vector has only one unique value (#578).
 
 # report 0.6.3
diff --git a/R/report.aov.R b/R/report.aov.R
index e784b78a..3faf0868 100644
--- a/R/report.aov.R
+++ b/R/report.aov.R
@@ -237,6 +237,12 @@ report_statistics.aov <- function(x, table = NULL, ...) {
       ", ",
       insight::format_value(parameters$DoF_Residuals, protect_integers = TRUE)
     )
+  } else if ("df_error" %in% names(parameters)) {
+    result_text <- paste0(
+      result_text,
+      ", ",
+      insight::format_value(parameters$df_error, protect_integers = TRUE)
+    )
   }
 
   # Indices
diff --git a/tests/testthat/test-report.lmer.R b/tests/testthat/test-report.lmer.R
index 77b6eb3c..b094a79f 100644
--- a/tests/testthat/test-report.lmer.R
+++ b/tests/testthat/test-report.lmer.R
@@ -25,3 +25,19 @@ test_that("report-lmer", {
 
   expect_snapshot(variant = "windows", report(m2))
 })
+
+test_that("report-lmerTest-anova includes denominator df", {
+  skip_if_not_installed("lmerTest")
+  
+  # Test case for issue #453: lmerTest ANOVA should include denominator degrees of freedom
+  m <- lmerTest::lmer(mpg ~ wt + (1 | gear), data = mtcars)
+  anova_result <- anova(m)
+  report_output <- report(anova_result)
+  
+  # The report should include denominator df in F-statistic
+  # Should be F(1, 21.92) not just F(1)
+  expect_match(as.character(report_output), "F\\(1, [0-9.]+\\)")
+  
+  # Should not have the old pattern without denominator df
+  expect_no_match(as.character(report_output), "F\\(1\\) =")
+})