diff --git a/autoload/ale/semver.vim b/autoload/ale/semver.vim
index 6b0fd34a..8f549c9f 100644
--- a/autoload/ale/semver.vim
+++ b/autoload/ale/semver.vim
@@ -14,7 +14,7 @@ function! ale#semver#GetVersion(executable, version_lines) abort
     let l:version = get(s:version_cache, a:executable, [])
 
     for l:line in a:version_lines
-        let l:match = matchlist(l:line, '\v(\d+)\.(\d+)\.(\d+)')
+        let l:match = matchlist(l:line, '\v(\d+)\.(\d+)\.?(\d?)')
 
         if !empty(l:match)
             let l:version = [l:match[1] + 0, l:match[2] + 0, l:match[3] + 0]
diff --git a/test/test_semver_utils.vader b/test/test_semver_utils.vader
index 30e9e818..cd0381dd 100644
--- a/test/test_semver_utils.vader
+++ b/test/test_semver_utils.vader
@@ -17,6 +17,10 @@ Execute(GetVersion should cache the version):
   AssertEqual [3, 4, 7], ale#semver#GetVersion('dummy', ['Version 3.4.7'])
   AssertEqual [3, 4, 7], ale#semver#GetVersion('dummy', [])
 
+Execute(GetVersion should tolerate missing patch numbers):
+  " This goes against the semver spec, but we handle it anyway.
+  AssertEqual [3, 4, 0], ale#semver#GetVersion('dummy', ['Version 3.4'])
+
 Execute(HasVersion should return 1 when the version has been cached):
   call ale#semver#GetVersion('dummy', [])
   AssertEqual 0, ale#semver#HasVersion('dummy')