diff --git a/.devel/pytest/test_approx.py b/.devel/pytest/test_approx.py
index bde91dc..f0d5de1 100644
--- a/.devel/pytest/test_approx.py
+++ b/.devel/pytest/test_approx.py
@@ -26,12 +26,12 @@
 
 try:
     import mlpack
-except ImportError:
+except:
     mlpack = None
 
 try:
     import nmslib
-except ImportError:
+except:
     nmslib = None
 
 
@@ -52,7 +52,7 @@
 
 def __test_genie_approx(metric='euclidean'):
     if nmslib is None: return
-
+    if mlpack is None: return
 
     for dataset in ["t4_8k", "h2mg_64_50"]:#, "bigger"]:#[, "bigger""s1", "Aggregation", "unbalance", "h2mg_64_50"]:#, "h2mg_1024_50", "t4_8k", "bigger"]:
         if dataset == "bigger":
@@ -133,6 +133,7 @@ def __test_genie_approx(metric='euclidean'):
 
 def __test_sparse(affinity='euclidean_sparse'):
     if nmslib is None: return
+    if mlpack is None: return
 
     np.random.seed(123)
     X = np.random.choice(np.arange(-2.0, 3.0), 1000).reshape(100,-1)
@@ -148,6 +149,7 @@ def __test_sparse(affinity='euclidean_sparse'):
 
 def __test_string(affinity='leven'):
     if nmslib is None: return
+    if mlpack is None: return
 
     np.random.seed(123)
     X = []
diff --git a/.devel/sphinx/_static/css/custom.css b/.devel/sphinx/_static/css/custom.css
index 240011c..8bc41f4 100644
--- a/.devel/sphinx/_static/css/custom.css
+++ b/.devel/sphinx/_static/css/custom.css
@@ -1,17 +1,21 @@
 /* --------------------------------------------------------------------------
-   Copyleft (C) 2021-2023, Marek Gagolewski <https://www.gagolewski.com/>
+   Copyleft (C) 2021-2024, Marek Gagolewski <https://www.gagolewski.com/>
    -------------------------------------------------------------------------- */
 
 @import url("fonts/Alegreya-fontspec.css");
 @import url("fonts/ubuntu-fontspec.css");
 
+.katex {
+    font-size: inherit;
+}
+
 h1, h2, h3, h4, h5, h6 {
     font-weight: 700;
     font-family: Alegreya Sans,Roboto Slab,ff-tisa-web-pro,Georgia,Arial,sans-serif;
 }
 
 body {
-    font-family: Lato,proxima-nova,Helvetica Neue,Arial,sans-serif;
+    font-family: Alegreya Sans,Lato,proxima-nova,Helvetica Neue,Arial,sans-serif;
     font-weight: 400;
 }
 
@@ -128,7 +132,8 @@ p code.notranslate, p code.literal, p tt.literal {
 
 strong.command, strong.program, .rst-content code, .rst-content div[class^="highlight"] pre, .rst-content tt, .rst-content pre, pre, samp, kbd, code {
     font-family: Ubuntu Mono,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,Courier,monospace;
-/*     font-size: 90%; */
+    letter-spacing: -0.15pt;
+    font-size: 95%;
 /*     font-style: normal; */
 }
 
diff --git a/.devel/sphinx/alphamarek.py b/.devel/sphinx/alphamarek.py
index 7d21a97..c99e5ce 100644
--- a/.devel/sphinx/alphamarek.py
+++ b/.devel/sphinx/alphamarek.py
@@ -113,7 +113,7 @@ def get_book_template(self, e):
             self.format_btitle(e, 'title'),
             self.format_volume_and_series(e),
             sentence [
-                field('publisher'),
+                optional_field('publisher'),
                 optional_field('address'),
                 self.format_edition(e)
             ],
diff --git a/DESCRIPTION b/DESCRIPTION
index 523b32f..586192a 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,8 +1,8 @@
 Package: genieclust
 Type: Package
 Title: Fast and Robust Hierarchical Clustering with Noise Points Detection
-Version: 1.1.5-2
-Date: 2023-11-02
+Version: 1.1.5-9001
+Date: 2024-06-17
 Authors@R: c(
     person("Marek", "Gagolewski",
         role = c("aut", "cre", "cph"),
diff --git a/genieclust/genie.py b/genieclust/genie.py
index 0c38d1e..6aa3e63 100644
--- a/genieclust/genie.py
+++ b/genieclust/genie.py
@@ -31,13 +31,13 @@
 
 try:
     import nmslib
-except ImportError:
+except:
     nmslib = None
 
 
 try:
     import mlpack
-except ImportError:
+except:
     mlpack = None
 
 
diff --git a/man/gclust.Rd b/man/gclust.Rd
index 268ee43..731d7f7 100644
--- a/man/gclust.Rd
+++ b/man/gclust.Rd
@@ -166,8 +166,8 @@ According to the algorithm's original definition,
 the resulting partition tree (dendrogram) might violate
 the ultrametricity property (merges might occur at levels that
 are not increasing w.r.t. a between-cluster distance).
-Departures from ultrametricity are corrected by applying
-\code{height = rev(cummin(rev(height)))}.
+\code{gclust()} automatically corrects departures from
+ultrametricity by applying \code{height = rev(cummin(rev(height)))}.
 }
 \examples{
 library("datasets")