diff --git a/CHANGELOG.md b/CHANGELOG.md
index fbdc6f5..c331819 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
+## Unreleased
+
+### Fixed
+
+- `:prog_name:` and other options can now contain multiple words (it used to stop at whitespace). (Pull #60)
+
 ## 0.8.0 - 2022-06-19
 
 ### Added
diff --git a/mkdocs_click/_processing.py b/mkdocs_click/_processing.py
index a816eb7..762e831 100644
--- a/mkdocs_click/_processing.py
+++ b/mkdocs_click/_processing.py
@@ -22,7 +22,7 @@ def replace_blocks(lines: Iterable[str], title: str, replace: Callable[..., Iter
 
     for line in lines:
         if in_block_section:
-            match = re.search(r"^\s+:(?P<key>.+):(?:\s+(?P<value>\S+))?", line)
+            match = re.search(r"^\s+:(?P<key>.+):(?:\s+(?P<value>.*\S))?", line)
             if match is not None:
                 # New ':key:' or ':key: value' line, ingest it.
                 key = match.group("key")
diff --git a/tests/test_processing.py b/tests/test_processing.py
index b78b052..45dc651 100644
--- a/tests/test_processing.py
+++ b/tests/test_processing.py
@@ -12,16 +12,17 @@ def test_replace_options():
 foo
 ::: target
     :option1: value1
-    :optiøn2: value2
+    :optiøn2: val ue2 
 \t:option3:
     :option4:\x20
+    :option5: 1
 bar
 """.strip()
 
     expected = """
 # Some content
 foo
-{'option1': 'value1', 'optiøn2': 'value2', 'option3': '', 'option4': ''}
+{'option1': 'value1', 'optiøn2': 'val ue2', 'option3': '', 'option4': '', 'option5': '1'}
 bar
 """.strip()