diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 8017623..82c8b8d 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -23,9 +23,9 @@ on:
 
 jobs:
   ci:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-26.04
     container:
-      image: chapel/chapel:2.0.0
+      image: chapel/chapel:2.6.0
 
     steps:
       - name: Checkout repository
diff --git a/exercises/practice/allergies/Mason.toml b/exercises/practice/allergies/Mason.toml
index 4722498..9318ba9 100644
--- a/exercises/practice/allergies/Mason.toml
+++ b/exercises/practice/allergies/Mason.toml
@@ -1,5 +1,5 @@
 [brick]
 name="allergies"
 version="0.1.0"
-chplVersion="2.0.0"
+chplVersion="2.6.0"
 type="application"
diff --git a/exercises/practice/anagram/Mason.toml b/exercises/practice/anagram/Mason.toml
index cd2590f..1d2ba84 100644
--- a/exercises/practice/anagram/Mason.toml
+++ b/exercises/practice/anagram/Mason.toml
@@ -1,5 +1,5 @@
 [brick]
 name="anagram"
 version="0.1.0"
-chplVersion="2.0.0"
+chplVersion="2.6.0"
 type="application"
diff --git a/exercises/practice/bob/Mason.toml b/exercises/practice/bob/Mason.toml
index d1a4bd8..4f89a1f 100644
--- a/exercises/practice/bob/Mason.toml
+++ b/exercises/practice/bob/Mason.toml
@@ -1,5 +1,5 @@
 [brick]
 name="bob"
 version="0.1.0"
-chplVersion="2.0.0"
+chplVersion="2.6.0"
 type="application"
diff --git a/exercises/practice/circular-buffer/Mason.toml b/exercises/practice/circular-buffer/Mason.toml
index e1cedf0..989abae 100644
--- a/exercises/practice/circular-buffer/Mason.toml
+++ b/exercises/practice/circular-buffer/Mason.toml
@@ -1,5 +1,5 @@
 [brick]
 name="circular-buffer"
 version="0.1.0"
-chplVersion="2.0.0"
+chplVersion="2.6.0"
 type="application"
diff --git a/exercises/practice/collatz-conjecture/Mason.toml b/exercises/practice/collatz-conjecture/Mason.toml
index 39839ee..bed8614 100644
--- a/exercises/practice/collatz-conjecture/Mason.toml
+++ b/exercises/practice/collatz-conjecture/Mason.toml
@@ -1,5 +1,5 @@
 [brick]
 name="collatz-conjecture"
 version="0.1.0"
-chplVersion="2.0.0"
+chplVersion="2.6.0"
 type="application"
diff --git a/exercises/practice/darts/Mason.toml b/exercises/practice/darts/Mason.toml
index 1b4f421..ca3f6e6 100644
--- a/exercises/practice/darts/Mason.toml
+++ b/exercises/practice/darts/Mason.toml
@@ -1,5 +1,5 @@
 [brick]
 name="darts"
 version="0.1.0"
-chplVersion="2.0.0"
+chplVersion="2.6.0"
 type="application"
diff --git a/exercises/practice/diamond/Mason.toml b/exercises/practice/diamond/Mason.toml
index a6dd795..41a2f4c 100644
--- a/exercises/practice/diamond/Mason.toml
+++ b/exercises/practice/diamond/Mason.toml
@@ -1,5 +1,5 @@
 [brick]
 name="diamond"
 version="0.1.0"
-chplVersion="2.0.0"
+chplVersion="2.6.0"
 type="application"
diff --git a/exercises/practice/difference-of-squares/Mason.toml b/exercises/practice/difference-of-squares/Mason.toml
index 7fdd480..025fa3a 100644
--- a/exercises/practice/difference-of-squares/Mason.toml
+++ b/exercises/practice/difference-of-squares/Mason.toml
@@ -1,7 +1,7 @@
 [brick]
 name="difference-of-squares"
 version="0.1.0"
-chplVersion="2.0.0"
+chplVersion="2.6.0"
 type="application"
 
 [dependencies]
diff --git a/exercises/practice/dominoes/Mason.toml b/exercises/practice/dominoes/Mason.toml
index 8dff758..b8815c4 100644
--- a/exercises/practice/dominoes/Mason.toml
+++ b/exercises/practice/dominoes/Mason.toml
@@ -1,5 +1,5 @@
 [brick]
 name="dominoes"
 version="0.1.0"
-chplVersion="2.0.0"
+chplVersion="2.6.0"
 type="application"
diff --git a/exercises/practice/forth/Mason.toml b/exercises/practice/forth/Mason.toml
index 7d78440..76d0df7 100644
--- a/exercises/practice/forth/Mason.toml
+++ b/exercises/practice/forth/Mason.toml
@@ -1,5 +1,5 @@
 [brick]
 name="forth"
 version="0.1.0"
-chplVersion="2.0.0"
+chplVersion="2.6.0"
 type="application"
diff --git a/exercises/practice/gigasecond/Mason.toml b/exercises/practice/gigasecond/Mason.toml
index 6505847..cd840fe 100644
--- a/exercises/practice/gigasecond/Mason.toml
+++ b/exercises/practice/gigasecond/Mason.toml
@@ -1,5 +1,5 @@
 [brick]
 name="gigasecond"
 version="0.1.0"
-chplVersion="2.0.0"
+chplVersion="2.6.0"
 type="application"
diff --git a/exercises/practice/hello-world/Mason.toml b/exercises/practice/hello-world/Mason.toml
index dafca85..7732c3c 100644
--- a/exercises/practice/hello-world/Mason.toml
+++ b/exercises/practice/hello-world/Mason.toml
@@ -1,5 +1,5 @@
 [brick]
 name="hello-world"
 version="0.1.0"
-chplVersion="2.0.0"
+chplVersion="2.6.0"
 type="application"
diff --git a/exercises/practice/high-scores/Mason.toml b/exercises/practice/high-scores/Mason.toml
index 8c1c4b6..9ea72ec 100644
--- a/exercises/practice/high-scores/Mason.toml
+++ b/exercises/practice/high-scores/Mason.toml
@@ -1,5 +1,5 @@
 [brick]
 name="high-scores"
 version="0.1.0"
-chplVersion="2.0.0"
+chplVersion="2.6.0"
 type="application"
diff --git a/exercises/practice/isogram/Mason.toml b/exercises/practice/isogram/Mason.toml
index aff2b31..7749f6a 100644
--- a/exercises/practice/isogram/Mason.toml
+++ b/exercises/practice/isogram/Mason.toml
@@ -1,5 +1,5 @@
 [brick]
 name="isogram"
 version="0.1.0"
-chplVersion="2.0.0"
+chplVersion="2.6.0"
 type="application"
diff --git a/exercises/practice/leap/Mason.toml b/exercises/practice/leap/Mason.toml
index ef78ad3..4b396b6 100644
--- a/exercises/practice/leap/Mason.toml
+++ b/exercises/practice/leap/Mason.toml
@@ -1,5 +1,5 @@
 [brick]
 name="leap"
 version="0.1.0"
-chplVersion="2.0.0"
+chplVersion="2.6.0"
 type="application"
diff --git a/exercises/practice/meetup/.meta/reference.chpl b/exercises/practice/meetup/.meta/reference.chpl
index 3cf1bda..f5cc7ca 100644
--- a/exercises/practice/meetup/.meta/reference.chpl
+++ b/exercises/practice/meetup/.meta/reference.chpl
@@ -1,12 +1,12 @@
 module Meetup {
   use Time;
-  const day2num = ["Monday" => 0,
-                   "Tuesday" => 1,
-                   "Wednesday" => 2,
-                   "Thursday" => 3,
-                   "Friday" => 4,
-                   "Saturday" => 5,
-                   "Sunday" => 6];
+  const day2num = ["Monday" => 1,
+                   "Tuesday" => 2,
+                   "Wednesday" => 3,
+                   "Thursday" => 4,
+                   "Friday" => 5,
+                   "Saturday" => 6,
+                   "Sunday" => 7];
   const ord2day = ["teenth" => 13,
                    "first" => 1,
                    "second" => 8,
diff --git a/exercises/practice/meetup/Mason.toml b/exercises/practice/meetup/Mason.toml
index c5ea4eb..96d344b 100644
--- a/exercises/practice/meetup/Mason.toml
+++ b/exercises/practice/meetup/Mason.toml
@@ -1,5 +1,5 @@
 [brick]
 name="meetup"
 version="0.1.0"
-chplVersion="2.0.0"
+chplVersion="2.6.0"
 type="application"
diff --git a/exercises/practice/nucleotide-count/Mason.toml b/exercises/practice/nucleotide-count/Mason.toml
index d94b554..ba0d7c8 100644
--- a/exercises/practice/nucleotide-count/Mason.toml
+++ b/exercises/practice/nucleotide-count/Mason.toml
@@ -1,5 +1,5 @@
 [brick]
 name="nucleotide-count"
 version="0.1.0"
-chplVersion="2.0.0"
+chplVersion="2.6.0"
 type="application"
diff --git a/exercises/practice/pangram/Mason.toml b/exercises/practice/pangram/Mason.toml
index f86aa3e..59e31e3 100644
--- a/exercises/practice/pangram/Mason.toml
+++ b/exercises/practice/pangram/Mason.toml
@@ -1,5 +1,5 @@
 [brick]
 name="pangram"
 version="0.1.0"
-chplVersion="2.0.0"
+chplVersion="2.6.0"
 type="application"
diff --git a/exercises/practice/raindrops/Mason.toml b/exercises/practice/raindrops/Mason.toml
index 7240bcc..a084e98 100644
--- a/exercises/practice/raindrops/Mason.toml
+++ b/exercises/practice/raindrops/Mason.toml
@@ -1,5 +1,5 @@
 [brick]
 name="raindrops"
 version="0.1.0"
-chplVersion="2.0.0"
+chplVersion="2.6.0"
 type="application"
diff --git a/exercises/practice/resistor-color/Mason.toml b/exercises/practice/resistor-color/Mason.toml
index 793d71c..81a5a89 100644
--- a/exercises/practice/resistor-color/Mason.toml
+++ b/exercises/practice/resistor-color/Mason.toml
@@ -1,5 +1,5 @@
 [brick]
 name="resistor-color"
 version="0.1.0"
-chplVersion="2.0.0"
+chplVersion="2.6.0"
 type="application"
diff --git a/exercises/practice/rna-transcription/Mason.toml b/exercises/practice/rna-transcription/Mason.toml
index fee18e5..3f77fd5 100644
--- a/exercises/practice/rna-transcription/Mason.toml
+++ b/exercises/practice/rna-transcription/Mason.toml
@@ -1,5 +1,5 @@
 [brick]
 name="rna-transcription"
 version="0.1.0"
-chplVersion="2.0.0"
+chplVersion="2.6.0"
 type="application"
diff --git a/exercises/practice/roman-numerals/Mason.toml b/exercises/practice/roman-numerals/Mason.toml
index 628d373..bf627fc 100644
--- a/exercises/practice/roman-numerals/Mason.toml
+++ b/exercises/practice/roman-numerals/Mason.toml
@@ -1,7 +1,7 @@
 [brick]
 name="roman-numerals"
 version="0.1.0"
-chplVersion="2.0.0"
+chplVersion="2.6.0"
 type="application"
 
 [dependencies]
diff --git a/exercises/practice/series/Mason.toml b/exercises/practice/series/Mason.toml
index c30e1a3..7fa0171 100644
--- a/exercises/practice/series/Mason.toml
+++ b/exercises/practice/series/Mason.toml
@@ -1,5 +1,5 @@
 [brick]
 name="series"
 version="0.1.0"
-chplVersion="2.0.0"
+chplVersion="2.6.0"
 type="application"
diff --git a/exercises/practice/two-fer/Mason.toml b/exercises/practice/two-fer/Mason.toml
index aabe811..1220fca 100644
--- a/exercises/practice/two-fer/Mason.toml
+++ b/exercises/practice/two-fer/Mason.toml
@@ -1,5 +1,5 @@
 [brick]
 name="two-fer"
 version="0.1.0"
-chplVersion="2.0.0"
+chplVersion="2.6.0"
 type="application"
diff --git a/exercises/practice/yacht/Mason.toml b/exercises/practice/yacht/Mason.toml
index f887da7..fbe0cce 100644
--- a/exercises/practice/yacht/Mason.toml
+++ b/exercises/practice/yacht/Mason.toml
@@ -1,5 +1,5 @@
 [brick]
 name="yacht"
 version="0.1.0"
-chplVersion="2.0.0"
+chplVersion="2.6.0"
 type="application"