diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index c2c756f..0522d57 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -18,8 +18,9 @@ jobs:
           # Remember to re-enable it one day.
           #
           # - ubuntu-latest
-          
+
           # https://github.com/actions/virtual-environments/#available-environments
+          - macos-12
           - macos-11
           - macos-10.15
     runs-on: ${{ matrix.os }}
diff --git a/amc-pango.rb b/amc-pango.rb
index 2834d0e..5d9642c 100644
--- a/amc-pango.rb
+++ b/amc-pango.rb
@@ -6,7 +6,7 @@ class AmcPango < Formula
   homepage "https://www.pango.org/"
   url "https://download.gnome.org/sources/pango/1.42/pango-1.42.4.tar.xz"
   sha256 "1d2b74cd63e8bd41961f2f8d952355aa0f9be6002b52c8aa7699d9f5da597c9d"
-  revision 2
+  revision 3
 
   bottle do
     root_url "https://github.com/maelvls/homebrew-amc/releases/download/amc-pango-1.42.4_2"
diff --git a/auto-multiple-choice.rb b/auto-multiple-choice.rb
index 7d63ae8..7f9e0f7 100644
--- a/auto-multiple-choice.rb
+++ b/auto-multiple-choice.rb
@@ -3,7 +3,7 @@ class AutoMultipleChoice < Formula
   homepage "https://www.auto-multiple-choice.net"
   url "https://gitlab.com/jojo_boulix/auto-multiple-choice/uploads/3262cbab3161e5e63239a281e9a2ce23/auto-multiple-choice_1.5.0_dist.tar.gz"
   sha256 "2e48ebb11a215c7882212c46f31d9013bb488c32899104008b0840e67f716948"
-  revision 0
+  revision 1
 
   bottle do
     root_url "https://github.com/maelvls/homebrew-amc/releases/download/auto-multiple-choice-1.5.0"
@@ -472,7 +472,7 @@ def install
     # broke things. Now c++11 is needed and I use pkg-config for conveniency.
     # And since pkg-config is used, CFLAGS, CXXFLAGS and LDFLAGS aren't needed
     # anymore.
-    inreplace "Makefile", "opencv\)", "opencv4)"
+    inreplace "Makefile", "opencv)", "opencv4)"
     inreplace "Makefile", "$(GCC_OPENCV) $(GCC_OPENCV_LIBS)", "$(GCC_OPENCV) $(GCC_OPENCV_LIBS) -std=c++11"
     inreplace "Makefile-brew.conf", /^GCC_.*/, ""
     inreplace "Makefile-brew.conf", /^CFLAGS.*/, ""
@@ -502,8 +502,8 @@ def install
     (bin/"auto-multiple-choice").write_env_script libexec/"bin/auto-multiple-choice",
         PERL5LIB:   ENV["PERL5LIB"],
         # netpbm, poppler and imagemagick@6 must be in the PATH
-        PATH:       "#{libexec}/bin:#{Formula["qpdf"].bin}:#{Formula["netpbm"].bin}"\
-                    ":#{Formula["poppler"].bin}:#{Formula["imagemagick@6"].bin}"\
+        PATH:       "#{libexec}/bin:#{Formula["qpdf"].bin}:#{Formula["netpbm"].bin}" \
+                    ":#{Formula["poppler"].bin}:#{Formula["imagemagick@6"].bin}" \
                     ":#{Formula["gobject-introspection"].bin}:$PATH",
         AMCBASEDIR: prefix