diff --git a/requirements/reproducible-linux.txt b/requirements/reproducible-linux.txt
index ab789ce5eb..66e6bed644 100644
--- a/requirements/reproducible-linux.txt
+++ b/requirements/reproducible-linux.txt
@@ -1241,9 +1241,9 @@ typing-inspection==0.4.4 \
     --hash=sha256:547274fa6b0a561ccf549cc9524b999a578e737d015d8709d021f9d0d13bea47 \
     --hash=sha256:65b8397ba37ccbce054456aaccddfc91e6e3083c92824df348d96ca832f3f147
     # via pydantic
-tzdata==2026.3 \
-    --hash=sha256:4a1518b8993086a7982523e071643f3c0e5f213e75b21318e78bcabfff9d1415 \
-    --hash=sha256:dc096730c87af6cab1b171c9d532be840741ff5d459015e7f6947bd7d7e54931
+tzdata==2026.4 \
+    --hash=sha256:c2169a8b0a7a5e9674da5a135ccdfb2b3e671b333ed9fed17b41f73c34476e81 \
+    --hash=sha256:f1b8bd365d8d210c55353f4d7f8d6d8561c0ba50d704b700d195a9424bba0d79
     # via arrow
 tzlocal==5.4.4 \
     --hash=sha256:8dbb8660838688a7b6ba4fed31d18dedf842afb4d47ca050d6d891c2c15f3be4 \
diff --git a/requirements/reproducible-mac.txt b/requirements/reproducible-mac.txt
index 18b6594f3e..3b36b41db6 100644
--- a/requirements/reproducible-mac.txt
+++ b/requirements/reproducible-mac.txt
@@ -1241,9 +1241,9 @@ typing-inspection==0.4.4 \
     --hash=sha256:547274fa6b0a561ccf549cc9524b999a578e737d015d8709d021f9d0d13bea47 \
     --hash=sha256:65b8397ba37ccbce054456aaccddfc91e6e3083c92824df348d96ca832f3f147
     # via pydantic
-tzdata==2026.3 \
-    --hash=sha256:4a1518b8993086a7982523e071643f3c0e5f213e75b21318e78bcabfff9d1415 \
-    --hash=sha256:dc096730c87af6cab1b171c9d532be840741ff5d459015e7f6947bd7d7e54931
+tzdata==2026.4 \
+    --hash=sha256:c2169a8b0a7a5e9674da5a135ccdfb2b3e671b333ed9fed17b41f73c34476e81 \
+    --hash=sha256:f1b8bd365d8d210c55353f4d7f8d6d8561c0ba50d704b700d195a9424bba0d79
     # via arrow
 tzlocal==5.4.4 \
     --hash=sha256:8dbb8660838688a7b6ba4fed31d18dedf842afb4d47ca050d6d891c2c15f3be4 \
diff --git a/requirements/reproducible-win.txt b/requirements/reproducible-win.txt
index 7a9b7d3386..fff0b9d354 100644
--- a/requirements/reproducible-win.txt
+++ b/requirements/reproducible-win.txt
@@ -1253,9 +1253,9 @@ typing-inspection==0.4.4 \
     --hash=sha256:547274fa6b0a561ccf549cc9524b999a578e737d015d8709d021f9d0d13bea47 \
     --hash=sha256:65b8397ba37ccbce054456aaccddfc91e6e3083c92824df348d96ca832f3f147
     # via pydantic
-tzdata==2026.3 \
-    --hash=sha256:4a1518b8993086a7982523e071643f3c0e5f213e75b21318e78bcabfff9d1415 \
-    --hash=sha256:dc096730c87af6cab1b171c9d532be840741ff5d459015e7f6947bd7d7e54931
+tzdata==2026.4 \
+    --hash=sha256:c2169a8b0a7a5e9674da5a135ccdfb2b3e671b333ed9fed17b41f73c34476e81 \
+    --hash=sha256:f1b8bd365d8d210c55353f4d7f8d6d8561c0ba50d704b700d195a9424bba0d79
     # via
     #   arrow
     #   tzlocal