Constantin Film is shoring up its domestic production by extending existing deals and signing new agreements with veteran and up-and-coming filmmakers.

Germany’s leading producer-distrib lengthened its first-look pact with Soenke Wortmann and Tom Spiess’ Cologne-based Little Shark Entertainment through 2014.

It also signed an exclusive three-picture agreement with Christian Ditter, director of tyke hit “Wickie and the Treasure of the Gods,” and extended its first-look film and TV deal with writer-helmer Bora Dagtekin, creator of the hit ARD series “Turkish for Beginners,” which he has adapted for the bigscreen. Constantin will release the pic in Germany on March 15.

Constantin teamed up with Little Shark on Wortmann’s 2009 box office hit “Pope Joan” as well as on the helmer’s upcoming comedy “Das Hochzeitsvideo” (The Wedding Video), which Constantin is releasing in May.

“The extension of the collaboration that has already lasted many years shows that Constantin Film is a reliable home for Germany’s best filmmakers,” said Martin Moszkowicz, Constantin’s head of film and television.

In addition to “Wickie,” which he also penned, Ditter has written and directed a slew of hit family films for Constantin, including his 2006 debut “French for Beginners,” 2009’s “The Crocodiles” and the 2010 sequel “The Crocodiles Strike Back.”

Dagtekin, meanwhile, will collaborate with Constantin on developing and producing theatrical and television content for at least another year. Aside from “Turkish for Beginners,” Dagtekin made a name for himself as writer and creator of RTL’s hit series “Doctor’s Diary.”

Dagtekin is now developing a mainstream comedy set to go into production this year. As with “Turkish for Beginners,” Constantin is co-producing with subsidiary Rat Pack Filmproduktion.