diff --git a/.github/workflows/pre-commit.yml b/.github/workflows/pre-commit.yml
index ad7c70940..a373b9d96 100644
--- a/.github/workflows/pre-commit.yml
+++ b/.github/workflows/pre-commit.yml
@@ -15,5 +15,5 @@ jobs:
     - uses: actions/setup-python@v2
     - uses: actions/setup-node@v2
       with:
-        node-version: '15'
+        node-version: '18'
     - uses: pre-commit/action@v2.0.0
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index ee175b97b..982f05f10 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -32,7 +32,7 @@ repos:
             |examples/samplers/MLDA_variance_reduction_linear_regression\.ipynb$
 
 - repo: https://github.com/FlamingTempura/bibtex-tidy
-  rev: v1.8.5
+  rev: v1.11.0
   hooks:
     - id: bibtex-tidy
       files: examples/references.bib
diff --git a/examples/references.bib b/examples/references.bib
index f28c8be17..92e518656 100644
--- a/examples/references.bib
+++ b/examples/references.bib
@@ -555,7 +555,7 @@ @unpublished{padonou2015polar
   note          = {working paper or preprint},
   year          = {2015},
   month         = Feb,
-  pdf           = {https://hal.archives-ouvertes.fr/hal-01119942v1/file/PolarGP\_CircularDomains.pdf}
+  pdf           = {https://hal.archives-ouvertes.fr/hal-01119942v1/file/PolarGP_CircularDomains.pdf}
 }
 @book{pearl2000causality,
   title         = {Causality: Models, reasoning and inference},
@@ -648,7 +648,7 @@ @online{stucchio2015bayesian
   title         = {Bayesian A/B Testing at VWO},
   author        = {Stucchio, Chris},
   year          = {2015},
-  url           = {https://vwo.com/downloads/VWO\_SmartStats\_technical\_whitepaper.pdf}
+  url           = {https://vwo.com/downloads/VWO_SmartStats_technical_whitepaper.pdf}
 }
 @misc{szegedy2014going,
   title         = {Going Deeper with Convolutions},