diff --git a/LICENSE.md b/LICENSE.md
index 9837ced..5c4732c 100644
--- a/LICENSE.md
+++ b/LICENSE.md
@@ -19,7 +19,7 @@ OF THIS SOFTWARE.
 
 RETRO 12 is:
 
-    Copyright (c) 2008 - 2018, Charles Childers
+    Copyright (c) 2008 - 2019, Charles Childers
 
 Portions of the code derive from RETRO 11, which is:
 
diff --git a/literate/Muri.md b/literate/Muri.md
index 9e8e195..1245812 100644
--- a/literate/Muri.md
+++ b/literate/Muri.md
@@ -293,7 +293,7 @@ int main(int argc, char **argv) {
     printf("Wrote %d cells to ngaImage\n", here);
   }
   else
-    printf("muri\n(c) 2017-2018 charles childers\n\n%s filename\n", argv[0]);
+    printf("muri\n(c) 2017-2019 charles childers\n\n%s filename\n", argv[0]);
   return 0;
 }
 ~~~
diff --git a/literate/Nga.md b/literate/Nga.md
index a1ec6f7..b5c0c04 100644
--- a/literate/Nga.md
+++ b/literate/Nga.md
@@ -44,7 +44,7 @@ the people who helped work on the C implementation.
 
 ~~~
 /* Nga ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-   Copyright (c) 2008 - 2018, Charles Childers
+   Copyright (c) 2008 - 2019, Charles Childers
    Copyright (c) 2009 - 2010, Luke Parrish
    Copyright (c) 2010,        Marc Simpson
    Copyright (c) 2010,        Jay Skeer
diff --git a/literate/RetroForth.md b/literate/RetroForth.md
index 7c1fa20..c86b88b 100644
--- a/literate/RetroForth.md
+++ b/literate/RetroForth.md
@@ -1758,7 +1758,7 @@ ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
 ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
 OF THIS SOFTWARE.
 
-    Copyright (c) 2008 - 2018, Charles Childers
+    Copyright (c) 2008 - 2019, Charles Childers
     Copyright (c) 2012 - 2013, Michal J Wallace
     Copyright (c) 2009 - 2011, Luke Parrish
     Copyright (c) 2009 - 2010, JGL
diff --git a/literate/Unu.md b/literate/Unu.md
index 378abe6..a073ef8 100644
--- a/literate/Unu.md
+++ b/literate/Unu.md
@@ -126,7 +126,7 @@ int main(int argc, char **argv) {
     }
   }
   else
-    printf("unu\n(c) 2013-2018 charles childers\n\nTry:\n  %s filename\n", argv[0]);
+    printf("unu\n(c) 2013-2019 charles childers\n\nTry:\n  %s filename\n", argv[0]);
   return 0;
 }
 ~~~