diff --git a/pkgs/development/python-modules/arviz-base/default.nix b/pkgs/development/python-modules/arviz-base/default.nix
index 32f7a70f191f..99c5e909f275 100644
--- a/pkgs/development/python-modules/arviz-base/default.nix
+++ b/pkgs/development/python-modules/arviz-base/default.nix
@@ -24,7 +24,7 @@
 
 buildPythonPackage (finalAttrs: {
   pname = "arviz-base";
-  version = "1.1.0";
+  version = "1.2.0";
   pyproject = true;
   __structuredAttrs = true;
 
@@ -32,7 +32,7 @@ buildPythonPackage (finalAttrs: {
     owner = "arviz-devs";
     repo = "arviz-base";
     tag = "v${finalAttrs.version}";
-    hash = "sha256-/v1LPgM2rDw9Z0en0MYGELGiRlmwQX4ILKsBEqOhhSs=";
+    hash = "sha256-IMS5t+ezAoALBxk0PnX7G+DFNfYW20Qd+/M2p1IzktA=";
   };
 
   build-system = [
diff --git a/pkgs/development/python-modules/arviz-plots/default.nix b/pkgs/development/python-modules/arviz-plots/default.nix
index 5e7a4a87e052..124dfb4ae34e 100644
--- a/pkgs/development/python-modules/arviz-plots/default.nix
+++ b/pkgs/development/python-modules/arviz-plots/default.nix
@@ -41,7 +41,7 @@
 
 buildPythonPackage (finalAttrs: {
   pname = "arviz-plots";
-  version = "1.1.0";
+  version = "1.2.0";
   pyproject = true;
   __structuredAttrs = true;
 
@@ -49,7 +49,7 @@ buildPythonPackage (finalAttrs: {
     owner = "arviz-devs";
     repo = "arviz-plots";
     tag = "v${finalAttrs.version}";
-    hash = "sha256-ti1wD/aPNCk59wkad+xkvIKTB2Wkupovlo0Hg0YqK1o=";
+    hash = "sha256-C08HLWnCixreeMj5imN7iOnYgYUZZ3+XG0lPExL4O1c=";
   };
 
   build-system = [
diff --git a/pkgs/development/python-modules/arviz-stats/default.nix b/pkgs/development/python-modules/arviz-stats/default.nix
index 490f7bdacb23..222c202bb5dd 100644
--- a/pkgs/development/python-modules/arviz-stats/default.nix
+++ b/pkgs/development/python-modules/arviz-stats/default.nix
@@ -38,7 +38,7 @@
 
 buildPythonPackage (finalAttrs: {
   pname = "arviz-stats";
-  version = "1.1.0";
+  version = "1.2.0";
   pyproject = true;
   __structuredAttrs = true;
 
@@ -46,7 +46,7 @@ buildPythonPackage (finalAttrs: {
     owner = "arviz-devs";
     repo = "arviz-stats";
     tag = "v${finalAttrs.version}";
-    hash = "sha256-81duRavbPUKsqTWaeD0G6ieWLtyoZm7sRk06QkG5dKQ=";
+    hash = "sha256-KA36JGqgsYs5fF1AndsTBkXQ6U/duoebDQ1TOEmaCSc=";
   };
 
   build-system = [
diff --git a/pkgs/development/python-modules/arviz/default.nix b/pkgs/development/python-modules/arviz/default.nix
index abfabf9053ae..84f681b56191 100644
--- a/pkgs/development/python-modules/arviz/default.nix
+++ b/pkgs/development/python-modules/arviz/default.nix
@@ -17,7 +17,7 @@
 
 buildPythonPackage (finalAttrs: {
   pname = "arviz";
-  version = "1.1.0";
+  version = "1.2.0";
   pyproject = true;
   __structuredAttrs = true;
 
@@ -25,7 +25,7 @@ buildPythonPackage (finalAttrs: {
     owner = "arviz-devs";
     repo = "arviz";
     tag = "v${finalAttrs.version}";
-    hash = "sha256-M9tj1X65hiLpI32X+t/gPYZHGwmAQ+9n52e8lVptg7k=";
+    hash = "sha256-pbYc9ofBTAZ9e7IqAgHXT0EXhbQzovSdc6X3SysAKhw=";
   };
 
   build-system = [