diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8529bfc6..7482c1e6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+## 0.0.92
+* Upgrade pdfminer-six to 20260107 to fix ~15-18% performance regression from eager f-string evaluation
+
 ## 0.0.91
 * Upgrade packages to resolve CVEs
 
diff --git a/prepline_general/api/__version__.py b/prepline_general/api/__version__.py
index 7cd18c1c..9666db13 100644
--- a/prepline_general/api/__version__.py
+++ b/prepline_general/api/__version__.py
@@ -1 +1 @@
-__version__ = "0.0.91"  # pragma: no cover
+__version__ = "0.0.92"  # pragma: no cover
diff --git a/preprocessing-pipeline-family.yaml b/preprocessing-pipeline-family.yaml
index 7b5199b7..ad2c506a 100644
--- a/preprocessing-pipeline-family.yaml
+++ b/preprocessing-pipeline-family.yaml
@@ -1,2 +1,2 @@
 name: general
-version: 0.0.91
+version: 0.0.92
diff --git a/requirements/base.txt b/requirements/base.txt
index c1329f01..8ee5bdfd 100644
--- a/requirements/base.txt
+++ b/requirements/base.txt
@@ -216,8 +216,9 @@ pandas==2.3.3
     #   unstructured-inference
 pdf2image==1.17.0
     # via unstructured
-pdfminer-six==20251230
+pdfminer-six==20260107
     # via
+    #   -c requirements/constraints.in
     #   unstructured
     #   unstructured-inference
 pi-heif==1.1.1
diff --git a/requirements/constraints.in b/requirements/constraints.in
index f213ea10..290080d8 100644
--- a/requirements/constraints.in
+++ b/requirements/constraints.in
@@ -5,4 +5,6 @@
 ####################################################################################################
 numpy<2.0.0
 # later versions of Starlette break middleware
-starlette==0.41.2
\ No newline at end of file
+starlette==0.41.2
+# pdfminer.six 20260107 includes performance fix
+pdfminer-six==20260107