diff --git a/DESCRIPTION b/DESCRIPTION
index 65c97e5..ae2c005 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,8 +1,8 @@
 Encoding: UTF-8
 Type: Package
 Package: fastTopics
-Version: 0.6-140
-Date: 2022-08-24
+Version: 0.6-141
+Date: 2022-09-05
 Title: Fast Algorithms for Fitting Topic Models and Non-Negative
     Matrix Factorizations to Count Data
 Authors@R: c(person("Peter","Carbonetto",role=c("aut","cre"),
@@ -38,7 +38,7 @@ Imports:
     utils,
     methods,
     stats,
-    Matrix,
+    Matrix (>= 1.4-2),
     MCMCpack,
     quadprog,
     irlba,
diff --git a/R/fit_poisson_nmf.R b/R/fit_poisson_nmf.R
index f856292..90d7a95 100644
--- a/R/fit_poisson_nmf.R
+++ b/R/fit_poisson_nmf.R
@@ -428,7 +428,7 @@ fit_poisson_nmf <- function (X, k, fit0, numiter = 100,
       method.text <- "CCD"
     cat(sprintf("Running %d %s updates, %s extrapolation ",numiter,
         method.text,ifelse(control$extrapolate,"with","without")))
-    cat("(fastTopics 0.6-140).\n")
+    cat("(fastTopics 0.6-141).\n")
   }
   
   # INITIALIZE ESTIMATES