diff --git a/Library/Homebrew/compilers.rb b/Library/Homebrew/compilers.rb
index 761700b17c..7f95f25b83 100644
--- a/Library/Homebrew/compilers.rb
+++ b/Library/Homebrew/compilers.rb
@@ -2,8 +2,8 @@
 
 # @private
 module CompilerConstants
-  GNU_GCC_VERSIONS = %w[4.9 5 6 7 8 9].freeze
-  GNU_GCC_REGEXP = /^gcc-(4\.9|[5-9])$/.freeze
+  GNU_GCC_VERSIONS = %w[4.9 5 6 7 8 9 10].freeze
+  GNU_GCC_REGEXP = /^gcc-(4\.9|[5-9]|10)$/.freeze
   COMPILER_SYMBOL_MAP = {
     "gcc"        => :gcc,
     "clang"      => :clang,
diff --git a/Library/Homebrew/development_tools.rb b/Library/Homebrew/development_tools.rb
index aed19cc8d7..456a156871 100644
--- a/Library/Homebrew/development_tools.rb
+++ b/Library/Homebrew/development_tools.rb
@@ -78,7 +78,7 @@ class DevelopmentTools
         path = HOMEBREW_PREFIX/"opt/gcc/bin"/cc
         path = locate(cc) unless path.exist?
         version = if path &&
-                     build_version = `#{path} --version`[/gcc(?:(?:-\d(?:\.\d)?)? \(.+\))? (\d\.\d\.\d)/, 1]
+                     build_version = `#{path} --version`[/gcc(?:(?:-\d(?:\.\d)?)? \(.+\))? (\d+\.\d\.\d)/, 1]
           Version.new build_version
         else
           Version::NULL