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-rw-r--r--gnu/packages/statistics.scm2
1 files changed, 1 insertions, 1 deletions
diff --git a/gnu/packages/statistics.scm b/gnu/packages/statistics.scm
index 26b8334440..1645671213 100644
--- a/gnu/packages/statistics.scm
+++ b/gnu/packages/statistics.scm
@@ -5774,7 +5774,7 @@ Farebrother's algorithm or Liu et al.'s algorithm.")
(propagated-inputs
(list r-ggplot2 r-gtable r-rlang r-scales))
(native-inputs
- (list r-knitr))
+ (list r-knitr r-testthat))
(home-page "https://github.com/wilkelab/cowplot")
(synopsis "Streamlined plot theme and plot annotations for ggplot2")
(description