diff --git a/api-ref/source/conf.py b/api-ref/source/conf.py
index 1883ed1..a618be7 100755
--- a/api-ref/source/conf.py
+++ b/api-ref/source/conf.py
@@ -129,6 +129,11 @@ latex_elements = {
   'papersize': 'a4paper',
   'pointsize': '12pt',
   'figure_align': 'H',
-  'preamble': r'\newcommand{\githash}{' + current_commit_hash + '}',
+  'preamble': rf'''
+        \newcommand{{\githash}}{{{current_commit_hash}}}
+        \newcommand{{\gitcommittime}}{{{current_commit_time}}}
+        \newcommand{{\doctitle}}{{{otcdocs_doc_title}}}
+        \newcommand{{\servicetitle}}{{{otcdocs_service_title}}}
+  ''',
   'sphinxsetup': 'hmargin={15mm,15mm}, vmargin={20mm,30mm}, marginpar=10mm'
 }
\ No newline at end of file
diff --git a/doc/source/conf.py b/doc/source/conf.py
index 3f8a941..b5e22d9 100755
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -125,6 +125,11 @@ latex_elements = {
   'papersize': 'a4paper',
   'pointsize': '12pt',
   'figure_align': 'H',
-  'preamble': r'\newcommand{\githash}{' + current_commit_hash + '}',
+  'preamble': rf'''
+        \newcommand{{\githash}}{{{current_commit_hash}}}
+        \newcommand{{\gitcommittime}}{{{current_commit_time}}}
+        \newcommand{{\doctitle}}{{{otcdocs_doc_title}}}
+        \newcommand{{\servicetitle}}{{{otcdocs_service_title}}}
+  ''',
   'sphinxsetup': 'hmargin={15mm,15mm}, vmargin={20mm,30mm}, marginpar=10mm'
 }
\ No newline at end of file
diff --git a/umn/source/conf.py b/umn/source/conf.py
index 3f3f387..5227d13 100755
--- a/umn/source/conf.py
+++ b/umn/source/conf.py
@@ -129,6 +129,11 @@ latex_elements = {
   'papersize': 'a4paper',
   'pointsize': '12pt',
   'figure_align': 'H',
-  'preamble': r'\newcommand{\githash}{' + current_commit_hash + '}',
+  'preamble': rf'''
+        \newcommand{{\githash}}{{{current_commit_hash}}}
+        \newcommand{{\gitcommittime}}{{{current_commit_time}}}
+        \newcommand{{\doctitle}}{{{otcdocs_doc_title}}}
+        \newcommand{{\servicetitle}}{{{otcdocs_service_title}}}
+  ''',
   'sphinxsetup': 'hmargin={15mm,15mm}, vmargin={20mm,30mm}, marginpar=10mm'
 }
\ No newline at end of file