diff --git a/pkgs/firehose/CHANGELOG.md b/pkgs/firehose/CHANGELOG.md
index 1c35aa89..8d800845 100644
--- a/pkgs/firehose/CHANGELOG.md
+++ b/pkgs/firehose/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.3.32
+
+- Fix an issue validating pre-release git publishing tags (#176).
+
 ## 0.3.31
 
 - Add PR Health checks for breaking changes.
diff --git a/pkgs/firehose/lib/src/changelog.dart b/pkgs/firehose/lib/src/changelog.dart
index 59b49651..9eb14621 100644
--- a/pkgs/firehose/lib/src/changelog.dart
+++ b/pkgs/firehose/lib/src/changelog.dart
@@ -26,19 +26,15 @@ class Changelog {
   /// Pattern recognizing some SemVer formats.
   ///
   /// Accepts:
-  /// >  digits '.' digits '.' digits
   ///
-  /// optionally followed by `-` or `+` character
-  /// and one or more "word characters", which are
-  /// ASCII letters (`a`-`z`, `A`-`Z`), digits (`0`-`9`),
-  /// underscore (`_`) and dollar-sign (`$`).
+  /// > digits '.' digits '.' digits
   ///
-  /// This is not all complete SemVer version strings,
-  /// since it doesn't allow `.` in the continuation,
-  /// or a `+...` sequence after a `-` sequence.
-  /// It should be enough for the user-cases we need it for
-  /// in this package.
-  static final _versionRegex = RegExp(r'\d+\.\d+\.\d+(?:[\-+]\w+)?');
+  /// optionally followed by `-` or `+` character and one of more non-whitespace
+  /// characters, without validating them as valid semver.
+  ///
+  /// This is not all complete SemVer version strings but it should be enough
+  /// for the user-cases we need it for in this package.
+  static final _versionRegex = RegExp(r'\d+\.\d+\.\d+(?:[+\-]\S*)?');
 
   String? get latestVersion {
     var input = latestHeading;
diff --git a/pkgs/firehose/lib/src/utils.dart b/pkgs/firehose/lib/src/utils.dart
index cc68c3c1..90320836 100644
--- a/pkgs/firehose/lib/src/utils.dart
+++ b/pkgs/firehose/lib/src/utils.dart
@@ -44,25 +44,27 @@ Future<int> runCommand(
 class Tag {
   /// RegExp matching a version tag at the start of a line.
   ///
-  /// A version tag is an optional starting seqeuence
-  /// of non-whitespace, which is the package name,
-  /// followed by a `v` and a simplified SemVer version
+  /// A version tag is an optional starting seqeuence of non-whitespace, which
+  /// is the package name, followed by a `v` and a simplified SemVer version
   /// number.
-  /// The version number accepted is
+  ///
+  /// The version number accepted is:
+  ///
   /// > digits '.' digits '.' digits
   ///
-  /// and if followed by a `+`, then it includes the
-  /// rest of the line.
+  /// and if followed by a `+` or `-`, then it includes the remaining
+  /// non-whitespace characters.
   static final RegExp packageVersionTag =
-      RegExp(r'^(?:(\S+)-)?v(\d+\.\d+\.\d+(?:\+.*)?)');
+      RegExp(r'^(?:(\S+)-)?v(\d+\.\d+\.\d+(?:[+\-]\S*)?)');
 
   /// A package version tag.
   ///
   /// Is expected to have the format:
+  ///
   /// > (package-name)? 'v' SemVer-version
   ///
-  /// If not, the tag is not [valid], and the [package] and [version]
-  /// will both be `null`.
+  /// If not, the tag is not [valid], and the [package] and [version] will both
+  /// be `null`.
   final String tag;
 
   Tag(this.tag);
diff --git a/pkgs/firehose/pubspec.yaml b/pkgs/firehose/pubspec.yaml
index a2caf145..04cde484 100644
--- a/pkgs/firehose/pubspec.yaml
+++ b/pkgs/firehose/pubspec.yaml
@@ -1,6 +1,6 @@
 name: firehose
 description: A tool to automate publishing of Pub packages from GitHub actions.
-version: 0.3.31
+version: 0.3.32
 repository: https://github.com/dart-lang/ecosystem/tree/main/pkgs/firehose
 
 environment:
diff --git a/pkgs/firehose/test/changelog_test.dart b/pkgs/firehose/test/changelog_test.dart
index d22020d9..ec1e72af 100644
--- a/pkgs/firehose/test/changelog_test.dart
+++ b/pkgs/firehose/test/changelog_test.dart
@@ -85,6 +85,16 @@ void main() {
       });
     });
 
+    test('with prerelease tag 2', () {
+      withChangelog('''
+## 123.456.789-beta.2
+''', (file) {
+        var changelog = Changelog(file);
+        var version = changelog.latestVersion;
+        expect(version, '123.456.789-beta.2');
+      });
+    });
+
     test('custom heading version', () {
       withChangelog('''
 ## [4.7.0](https://github.com/...) (2023-05-06)
diff --git a/pkgs/firehose/test/utils_test.dart b/pkgs/firehose/test/utils_test.dart
index d7ad41b4..a253712e 100644
--- a/pkgs/firehose/test/utils_test.dart
+++ b/pkgs/firehose/test/utils_test.dart
@@ -22,6 +22,11 @@ void main() {
       expect(tag.version, '1.2.3');
     });
 
+    test('pre-release package repo', () {
+      var tag = Tag('v1.2.3-beta');
+      expect(tag.version, '1.2.3-beta');
+    });
+
     test('service release', () {
       var tag = Tag('v1.2.3+1');
       expect(tag.version, '1.2.3+1');
@@ -39,6 +44,12 @@ void main() {
       expect(tag.version, '1.2.3');
     });
 
+    test('mono repo pre-release', () {
+      var tag = Tag('foo_bar-v1.2.3-dev.1');
+      expect(tag.package, 'foo_bar');
+      expect(tag.version, '1.2.3-dev.1');
+    });
+
     test('mono repo bad', () {
       var tag = Tag('foobar_v1.2.3');
       expect(tag.valid, false);